### 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 (render_frame_host.GetFrameTreeNodeId() ==
            contents->GetMainFrame()->GetFrameTreeNodeId() ||
        (prefs && prefs->AllowsNodeIntegrationInSubFrames())) {
      associated_registry.AddInterface(base::BindRepeating(
          [](content::RenderFrameHost* render_frame_host,
             mojo::PendingAssociatedReceiver<electron::mojom::ElectronApiIPC>
                 receiver) {
            ElectronApiIPCHandlerImpl::Create(render_frame_host,
                                              std::move(receiver));
          },
          &render_frame_host));
    }
  }
  associated_registry.AddInterface(base::BindRepeating(
      [](content::RenderFrameHost* render_frame_host,
         mojo::PendingAssociatedReceiver<
             electron::mojom::ElectronWebContentsUtility> receiver) {
        ElectronWebContentsUtilityHandlerImpl::Create(render_frame_host,
                                                      std::move(receiver));
      },
      &render_frame_host));
  associated_registry.AddInterface(base::BindRepeating(
      [](content::RenderFrameHost* render_frame_host,
         mojo::PendingAssociatedReceiver<mojom::ElectronAutofillDriver>
             receiver) {
        AutofillDriverFactory::BindAutofillDriver(std::move(receiver),
                                                  render_frame_host);
      },
      &render_frame_host));
#if BUILDFLAG(ENABLE_PRINTING)