Introduced by https://github.com/electron/electron/pull/33906.

Root Cause: https://chromium-review.googlesource.com/c/chromium/src/+/3579297

<details> <summary> Stacktrace </summary>

```
[46358:0518/110313.131061:FATAL:values_mojom_traits.h(100)] Check failed: value.is_dict(). 
0   Electron Framework                  0x000000012ef92ba9 base::debug::CollectStackTrace(void**, unsigned long) + 9
1   Electron Framework                  0x000000012eeb3ac3 base::debug::StackTrace::StackTrace() + 19
2   Electron Framework                  0x000000012eecccdf logging::LogMessage::~LogMessage() + 175
3   Electron Framework                  0x000000012eecdd2e logging::LogMessage::~LogMessage() + 14
4   Electron Framework                  0x000000012a9ed02a mojo::internal::Serializer<mojo_base::mojom::DeprecatedDictionaryValueDataView, base::Value>::Serialize(base::Value&, mojo::internal::MessageFragment<mojo_base::mojom::internal::DeprecatedDictionaryValue_Data>&) + 90
5   Electron Framework                  0x000000012e7582da printing::mojom::PrintRenderFrameProxy::PrintRequestedPages(bool, base::Value) + 362
6   Electron Framework                  0x0000000133f15232 printing::PrintViewManagerBase::CompletePrintNow(content::RenderFrameHost*) + 146
7   Electron Framework                  0x0000000133f14f3b printing::PrintViewManagerBase::PrintNow(content::RenderFrameHost*, bool, base::Value, base::OnceCallback<void (bool, std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&)>) + 395
8   Electron Framework                  0x000000012a56ed16 electron::api::WebContents::OnGetDefaultPrinter(base::Value, base::OnceCallback<void (bool, std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&)>, std::__1::basic_string<char16_t, std::__1::char_traits<char16_t>, std::__1::allocator<char16_t> >, bool, std::__1::pair<std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> >, std::__1::basic_string<char16_t, std::__1::char_traits<char16_t>, std::__1::allocator<char16_t> > >) + 1686
9   Electron Framework                  0x000000012a580b93 void base::internal::FunctorTraits<void (electron::api::WebContents::*)(base::Value, base::OnceCallback<void (bool, std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&)>, std::__1::basic_string<char16_t, std::__1::char_traits<char16_t>, std::__1::allocator<char16_t> >, bool, std::__1::pair<std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> >, std::__1::basic_string<char16_t, std::__1::char_traits<char16_t>, std::__1::allocator<char16_t> > >), void>::Invoke<void (electron::api::WebContents::*)(base::Value, base::OnceCallback<void (bool, std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&)>, std::__1::basic_string<char16_t, std::__1::char_traits<char16_t>, std::__1::allocator<char16_t> >, bool, std::__1::pair<std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> >, std::__1::basic_string<char16_t, std::__1::char_traits<char16_t>, std::__1::allocator<char16_t> > >), base::WeakPtr<electron::api::WebContents>, base::Value, base::OnceCallback<void (bool, std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&)>, std::__1::basic_string<char16_t, std::__1::char_traits<char16_t>, std::__1::allocator<char16_t> >, bool, std::__1::pair<std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> >, std::__1::basic_string<char16_t, std::__1::char_traits<char16_t>, std::__1::allocator<char16_t> > > >(void (electron::api::WebContents::*)(base::Value, base::OnceCallback<void (bool, std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&)>, std::__1::basic_string<char16_t, std::__1::char_traits<char16_t>, std::__1::allocator<char16_t> >, bool, std::__1::pair<std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> >, std::__1::basic_string<char16_t, std::__1::char_traits<char16_t>, std::__1::allocator<char16_t> > >), base::WeakPtr<electron::api::WebContents>&&, base::Value&&, base::OnceCallback<void (bool, std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&)>&&, std::__1::basic_string<char16_t, std::__1::char_traits<char16_t>, std::__1::allocator<char16_t> >&&, bool&&, std::__1::pair<std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> >, std::__1::basic_string<char16_t, std::__1::char_traits<char16_t>, std::__1::allocator<char16_t> > >&&) + 291
10  Electron Framework                  0x000000012a58099d base::internal::Invoker<base::internal::BindState<void (electron::api::WebContents::*)(base::Value, base::OnceCallback<void (bool, std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&)>, std::__1::basic_string<char16_t, std::__1::char_traits<char16_t>, std::__1::allocator<char16_t> >, bool, std::__1::pair<std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> >, std::__1::basic_string<char16_t, std::__1::char_traits<char16_t>, std::__1::allocator<char16_t> > >), base::WeakPtr<electron::api::WebContents>, base::Value, base::OnceCallback<void (bool, std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&)>, std::__1::basic_string<char16_t, std::__1::char_traits<char16_t>, std::__1::allocator<char16_t> >, bool>, void (std::__1::pair<std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> >, std::__1::basic_string<char16_t, std::__1::char_traits<char16_t>, std::__1::allocator<char16_t> > >)>::RunOnce(base::internal::BindStateBase*, std::__1::pair<std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> >, std::__1::basic_string<char16_t, std::__1::char_traits<char16_t>, std::__1::allocator<char16_t> > >&&) + 77
11  Electron Framework                  0x000000012a581102 void base::internal::ReplyAdapter<std::__1::pair<std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> >, std::__1::basic_string<char16_t, std::__1::char_traits<char16_t>, std::__1::allocator<char16_t> > >, std::__1::pair<std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> >, std::__1::basic_string<char16_t, std::__1::char_traits<char16_t>, std::__1::allocator<char16_t> > > >(base::OnceCallback<void (std::__1::pair<std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> >, std::__1::basic_string<char16_t, std::__1::char_traits<char16_t>, std::__1::allocator<char16_t> > >)>, std::__1::unique_ptr<std::__1::pair<std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> >, std::__1::basic_string<char16_t, std::__1::char_traits<char16_t>, std::__1::allocator<char16_t> > >, std::__1::default_delete<std::__1::pair<std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> >, std::__1::basic_string<char16_t, std::__1::char_traits<char16_t>, std::__1::allocator<char16_t> > > > >*) + 210
12  Electron Framework                  0x000000012a4f9627 base::internal::Invoker<base::internal::BindState<void (*)(base::OnceCallback<(anonymous namespace)::CloseFileResult ()>, std::__1::unique_ptr<(anonymous namespace)::CloseFileResult, std::__1::default_delete<(anonymous namespace)::CloseFileResult> >*), base::OnceCallback<(anonymous namespace)::CloseFileResult ()>, base::internal::UnretainedWrapper<std::__1::unique_ptr<(anonymous namespace)::CloseFileResult, std::__1::default_delete<(anonymous namespace)::CloseFileResult> > > >, void ()>::RunOnce(base::internal::BindStateBase*) + 39
13  Electron Framework                  0x000000012ef74403 base::(anonymous namespace)::PostTaskAndReplyRelay::RunReply(base::(anonymous namespace)::PostTaskAndReplyRelay) + 211
14  Electron Framework                  0x000000012ef74499 base::internal::Invoker<base::internal::BindState<void (*)(base::(anonymous namespace)::PostTaskAndReplyRelay), base::(anonymous namespace)::PostTaskAndReplyRelay>, void ()>::RunOnce(base::internal::BindStateBase*) + 73
15  Electron Framework                  0x000000012ef261f9 base::TaskAnnotator::RunTaskImpl(base::PendingTask&) + 313
16
Electron Framework                  0x000000012ef4e1ca base::sequence_manager::internal::ThreadControllerWithMessagePumpImpl::DoWorkImpl(base::sequence_manager::LazyNow*) + 1066
17  Electron Framework                  0x000000012ef4d88e base::sequence_manager::internal::ThreadControllerWithMessagePumpImpl::DoWork() + 126
18  Electron Framework                  0x000000012ef4e9e2 non-virtual thunk to base::sequence_manager::internal::ThreadControllerWithMessagePumpImpl::DoWork() + 18
19  Electron Framework                  0x000000012efa83e1 base::MessagePumpCFRunLoopBase::RunWork() + 97
20  Electron Framework                  0x000000012efa78c2 base::mac::CallWithEHFrame(void () block_pointer) + 10
21  Electron Framework                  0x000000012efa7e0f base::MessagePumpCFRunLoopBase::RunWorkSource(void*) + 63
22  CoreFoundation                      0x00007ff80b673aeb __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 17
23  CoreFoundation                      0x00007ff80b673a53 __CFRunLoopDoSource0 + 180
24  CoreFoundation                      0x00007ff80b6737cd __CFRunLoopDoSources0 + 242
25  CoreFoundation                      0x00007ff80b6721e8 __CFRunLoopRun + 892
26  CoreFoundation                      0x00007ff80b6717ac CFRunLoopRunSpecific + 562
27  HIToolbox                           0x00007ff8142f8ce6 RunCurrentEventLoopInMode + 292
28  HIToolbox                           0x00007ff8142f8a4a ReceiveNextEventCommon + 594
29  HIToolbox                           0x00007ff8142f87e5 _BlockUntilNextEventMatchingListInModeWithFilter + 70
30  AppKit                              0x00007ff80e09853d _DPSNextEvent + 927
31  AppKit                              0x00007ff80e096bfa -[NSApplication(NSEvent) _nextEventMatchingEventMask:untilDate:inMode:dequeue:] + 1394
32  AppKit                              0x00007ff80e0892a9 -[NSApplication run] + 586
33  Electron Framework                  0x000000012efa8e7c base::MessagePumpNSApplication::DoRun(base::MessagePump::Delegate*) + 348
34  Electron Framework                  0x000000012efa796b base::MessagePumpCFRunLoopBase::Run(base::MessagePump::Delegate*) + 155
35  Electron Framework                  0x000000012ef4ef97 base::sequence_manager::internal::ThreadControllerWithMessagePumpImpl::Run(bool, base::TimeDelta) + 695
36  Electron Framework                  0x000000012ef01dc6 base::RunLoop::Run(base::Location const&) + 726
37  Electron Framework                  0x000000012dac4c83 content::BrowserMainLoop::RunMainMessageLoop() + 243
38  Electron Framework                  0x000000012dac6822 content::BrowserMainRunnerImpl::Run() + 82
39  Electron Framework                  0x000000012dac1fce content::BrowserMain(content::MainFunctionParams) + 270
40  Electron Framework                  0x000000012a90bd12 content::RunBrowserProcessMain(content::MainFunctionParams, content::ContentMainDelegate*) + 258
41  Electron Framework                  0x000000012a90d28b content::ContentMainRunnerImpl::RunBrowser(content::MainFunctionParams, bool) + 1403
42  Electron Framework                  0x000000012a90cc90 content::ContentMainRunnerImpl::Run() + 736
43  Electron Framework                  0x000000012a90b637 content::RunContentProcess(content::ContentMainParams, content::ContentMainRunner*) + 2679
44  Electron Framework                  0x000000012a90b752 content::ContentMain(content::ContentMainParams) + 98
45  Electron Framework                  0x000000012a4b883d ElectronMain + 157
46  dyld                                0x0000000114aee51e start + 462
Task trace:
0   Electron Framework                  0x000000012a56f8b0 electron::api::WebContents::Print(gin::Arguments*) + 2832
1   Electron Framework                  0x000000012a56f8b0 electron::api::WebContents::Print(gin::Arguments*) + 2832
2   Electron Framework                  0x000000012f718430 IPC::(anonymous namespace)::ChannelAssociatedGroupController::Accept(mojo::Message*) + 784
3   Electron Framework                  0x000000012f2f4f9e mojo::SimpleWatcher::Context::Notify(unsigned int, MojoHandleSignalsState, unsigned int) + 430
Crash keys:
  "ui_scheduler_async_stack" = "0x12A56F8B0 0x12A56F8B0"
  "io_scheduler_async_stack" = "0x12BEBEDDB 0x0"
  "platform" = "darwin"
  "process_type" = "browser"
```

</details> 
shell/browser/api/electron_api_web_contents.cc
It's not safe to assume that |this| points to valid memory at this point.
  if (!weak_this || !ontents())
    return;
   Required to make beforeunload handler work.
  NotifyUserActivation();
}
 TODO(MarshallOfSound): Figure out what we need to do with post data here, I
 believe the default behavior when we pass "true" is to phone out to the
 delegate and then the controller expects this method to be called again with
 "false" if the user approves the reload.  For now this would result in
 ".reload()" calls on POST data domains failing silently.  Passing false would
 result in them succeeding, but reposting which although more correct could be
 considering a breaking change.
void WebContents::Reload() {
  ontents()->GetController().Reload(content::ReloadType::NORMAL,
                                         /* check_for_repost */ true);
}
void WebContents::ReloadIgnoringCache() {
  ontents()->GetController().Reload(content::ReloadType::BYPASSING_CACHE,
                                         /* check_for_repost */ true);
}
void WebContents::DownloadURL(const GURL& url) {
  auto* browser_context = ontents()->GetBrowserContext();
  auto* download_manager = browser_context->GetDownloadManager();
  std::unique_ptr<download::DownloadUrlParameters> download_params(
      content::DownloadRequestUtils::CreateDownloadForWebContentsMainFrame(
          ontents(), url, MISSING_TRAFFIC_ANNOTATION));
  download_manager->DownloadUrl(std::move(download_params));
}
std::u16string WebContents::GetTitle() const {