### 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.h
const std::string& frame_name,
                       WindowOpenDisposition disposition,
                       const blink::mojom::WindowFeatures& features,
                       const std::string& raw_features,
                       const scoped_refptr<network::ResourceRequestBody>& body,
                       bool user_gesture,
                       bool opener_suppressed,
                       bool* no_javascript_access) override;
#if BUILDFLAG(ENABLE_PICTURE_IN_PICTURE)
  std::unique_ptr<content::VideoOverlayWindow>
  CreateWindowForVideoPictureInPicture(
      content::VideoPictureInPictureWindowController* controller) override;
  std::unique_ptr<content::DocumentOverlayWindow>
  CreateWindowForDocumentPictureInPicture(
      content::DocumentPictureInPictureWindowController* controller) override;
#endif
  void GetAdditionalAllowedSchemesForFileSystem(
      std::vector<std::string>* additional_schemes) override;
  void GetAdditionalWebUISchemes(
      std::vector<std::string>* additional_schemes) override;
  void SiteInstanceDeleting(content::SiteInstance* site_instance) override;
  std::unique_ptr<net::ClientCertStore> CreateClientCertStore(
      content::BrowserContext* browser_context) override;
  std::unique_ptr<device::LocationProvider> OverrideSystemLocationProvider()
      override;
  void ConfigureNetworkContextParams(
      content::BrowserContext* browser_context,
      bool in_memory,
      const base::FilePath& relative_partition_path,
      network::mojom::NetworkContextParams* network_context_params,