### 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
#include "components/crash/core/app/crashpad.h"        
#endif
#if BUILDFLAG(ENABLE_PICTURE_IN_PICTURE) && BUILDFLAG(IS_WIN)
#include "chrome/browser/ui/views/overlay/document_overlay_window_views.h"
#include "chrome/browser/ui/views/overlay/video_overlay_window_views.h"
#include "shell/browser/browser.h"
#include "ui/aura/window.h"
#include "ui/aura/window_tree_host.h"
#include "ui/base/win/shell.h"
#include "ui/views/widget/widget.h"
#endif
#if BUILDFLAG(ENABLE_PRINTING)
#include "shell/browser/printing/print_view_manager_electron.h"
#endif
#if BUILDFLAG(ENABLE_PDF_VIEWER)
#include "chrome/browser/pdf/chrome_pdf_stream_delegate.h"
#include "chrome/browser/plugins/pdf_iframe_navigation_throttle.h"  
#include "components/pdf/browser/pdf_navigation_throttle.h"
#include "components/pdf/browser/pdf_url_loader_request_interceptor.h"
#include "components/pdf/browser/pdf_web_contents_helper.h"  
#include "components/pdf/common/internal_plugin_helpers.h"
#endif
using content::BrowserThread;
namespace electron {
namespace {
ElectronBrowserClient* g_browser_client = nullptr;
base::LazyInstance<std::string>::DestructorAtExit
    g_io_thread_application_locale = LAZY_INSTANCE_INITIALIZER;
base::NoDestructor<std::string> g_application_locale;
void SetApplicationLocaleOnIOThread(const std::string& locale) {