### 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 base::TimeTicks& proceed_time) {
  
  
}
void WebContents::HandleNewRenderFrame(
    content::RenderFrameHost* render_frame_host) {
  auto* rwhv = render_frame_host->GetView();
  if (!rwhv)
    return;
  
  auto* web_preferences = WebContentsPreferences::From(ontents());
  if (web_preferences) {
    absl::optional<SkColor> maybe_color = web_preferences->GetBackgroundColor();
    ontents()->SetPageBaseBackgroundColor(maybe_color);
    bool guest = IsGuest() || type_ == Type::kBrowserView;
    SkColor color =
        maybe_color.value_or(guest ? SK_ColorTRANSPARENT : SK_ColorWHITE);
    SetBackgroundColor(rwhv, color);
  }
  if (!background_throttling_)
    render_frame_host->GetRenderViewHost()->SetSchedulerThrottling(false);
  auto* rwh_impl =
      static_cast<content::RenderWidgetHostImpl*>(rwhv->GetRenderWidgetHost());
  if (rwh_impl)
    rwh_impl->disable_hidden_ = !background_throttling_;
  auto* web_frame = WebFrameMain::FromRenderFrameHost(render_frame_host);
  if (web_frame)
    web_frame->MaybeSetupMojoConnection();
}
void WebContents::OnBackgroundColorChanged() {