Tab Key Navigation not working when OverlayPopups is set to true

[StefanKoell]

Describe the bug

When OverlayPopups property of platform options is set to true, you can't use tab key to navigate through controls on a Flyout/Popup.

To Reproduce

Here's a simple repro project: https://github.com/StefanKoell/Misc/tree/main/src/AvaFlyoutIssue2

• Start the application
• Use the tab key to cycle through the controls
• Once one of the Click Me! button is focused, hit space to show the popup/flyout
• Pressing the tab key again, the focus moves to the next control instead of the first control of the flyout

Expected behavior

The expected behavior is that the tab key presses are cycling through the popup/flyout controls. When OverlayPopups is false, it works as expected.

Avalonia version

11.1.0-rc1

OS

Windows, macOS

Additional context

No response