[BUG] Disappearing selection in HC modes

[DaveTryon]

Describe the bug
When running in HC modes, the radiobutton showing the selected Tree view option (Raw/Control/Content) doesn't render complete when the option is in hover state. Light mode and Dark mode work OK, but it fails in all Win11 HC modes

To Reproduce
Steps to reproduce the behavior:

1. Start AIWin with the system in a HC mode (the screenshots use Aquatic but it's not unique to that theme
2. Select an element
3. Open the settings in the hierarchy view
4. Open the "Tree View" menu
5. Hover over a non-selected option--looks fine
6. Hover over the selected view and compare to the other options

Expected behavior
It should be clear which option is selected

Actual behavior
The circle that indicates the selected radiobutton disappears

Screenshots or .GIF
If applicable, add screenshots to help explain your problem.

Mode	Hover on non-selected option	Hover on selected option
Dark
HC Aquatic

Desktop (please complete the following information):

• OS: Windows 11 22H2
• Accessibility Insights for Windows Version: 1.1.2248.1

Additional context
This appears to be an old problem that we missed when we added HC support

[microsoft-github-policy-service]

This issue has been marked as ready for team triage; we will triage it in our weekly review and update the issue. Thank you for contributing to Accessibility Insights!

[DaveTryon]

This is probably just a case of not defining the correct brush for the highlight of the selected RadioButton. Marking as help wanted/community interest