### 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/electron_browser_client.cc
if (BrowserThread::CurrentlyOn(BrowserThread::IO))
    return g_io_thread_application_locale.Get();
  return *g_application_locale;
}
base::FilePath ElectronBrowserClient::GetFontLookupTableCacheDir() {
  base::FilePath user_data_dir;
  base::PathService::Get(chrome::DIR_USER_DATA, &user_data_dir);
  DCHECK(!user_data_dir.empty());
  return user_data_dir.Append(FILE_PATH_LITERAL("FontLookupTableCache"));
}
bool ElectronBrowserClient::ShouldEnableStrictSiteIsolation() {
  
  return true;
}
void ElectronBrowserClient::BindHostReceiverForRenderer(
    content::RenderProcessHost* render_process_host,
    mojo::GenericPendingReceiver receiver) {
#if BUILDFLAG(ENABLE_BUILTIN_SPELLCHECKER)
  if (auto host_receiver = receiver.As<spellcheck::mojom::SpellCheckHost>()) {
    SpellCheckHostChromeImpl::Create(render_process_host->GetID(),
                                     std::move(host_receiver));
    return;
  }
#endif
}
#if BUILDFLAG(ENABLE_ELECTRON_EXTENSIONS)
void BindMimeHandlerService(