### Preflight Checklist

- [X] I have read the [Contributing Guidelines](https://github.com/electron/electron/blob/master/CONTRIBUTING.md) for this project.
- [X] I agree to follow the [Code of Conduct](https://github.com/electron/electron/blob/master/CODE_OF_CONDUCT.md) that this project adheres to.
- [X] I have searched the [issue tracker](https://www.github.com/electron/electron/issues) for a feature request that matches the one I want to file, without success.

### Electron Version

13.1.7

### What operating system are you using?

Windows

### Operating System Version

Windows 10 version 20H2

### What arch are you using?

x64

### Last Known Working Electron version

12.0.15

### Expected Behavior

Checking `navigator.userAgentData` in Chrome 91 returns an array of brands appropriately. Electron 13/14 do not return anything.

This appears to then become a problem for my situation. I am posting a form with hidden variables to a third-party vendor I work with. This form post ultimately loads an iframe.

Expected: As it does in Chrome 91, load the iframe from this third-party vendor.

### Actual Behavior

A header of "sec-ch-ua" is included in the request to the third-party vendor and it is blank. They are rejecting the post because of an invalid header. I suspect this is because Chrome 13/14 does not make this hint data made available correctly.

I tried loading various sites in Chrome 91 that do load brand names in Electron 13/14 and they are empty if you review `navigator.userAgentData`.

### Testcase Gist URL

_No response_

### Additional Information

_No response_
shell/browser/api/electron_api_web_contents.cc
const std::string& channel,
                            blink::CloneableMessage arguments) {
  TRACE_EVENT1("electron", "WebContents::MessageTo", "channel", channel);
  auto* target_ontents = FromID(ontents_id);
  if (target_ontents) {
    content::RenderFrameHost* frame = target_ontents->MainFrame();
    DCHECK(frame);
    v8::HandleScope handle_scope(JavascriptEnvironment::GetIsolate());
    gin::HFrameMain> web_frame_main =
        WebFrameMain::From(JavascriptEnvironment::GetIsolate(), frame);
    if (!web_frame_main->CheckRenderFrame())
      return;
    int32_t sender_id = ID();
    web_frame_main->GetRendererApi()->Message(false /* interl,
                                              std::move(arguments), sender_id);
  }
}
void WebContents::MessageHost(const std::string& channel,
                              blink::CloneableMessage arguments,
                              content::RenderFrameHost* render_frame_host) {
  TRACE_EVENT1("electron", "WebContents::MessageHost", "channel", channel);
   webContents.emit('ipc-message-host', new Event(), channel, args);
  EmitWithSender("ipc-message-host", render_frame_host,
                 electron::mojom::ElectronApiIPC::InvokeCallback(), channel,
                 std::move(arguments));
}
void WebContents::UpdateDraggableRegions(
    std::vector<mojom::DraggableRegionPtr> regions) {
  for (ExtendedWebContentsObserver& observer : observers_)
    observer.OnDraggableRegionsUpdated(regions);