More Info:
- This issue does not occur in .NET Core 3.1 and .NET Framework.
- This issue occurs in NumericUpDown control too.
Problem description:
The IsKeyboardFocusable field is false and the HasKeyboardFocus field is true in UIA structure.

Expected behavior:
The IsKeyboardFocusable field is true and the HasKeyboardFocus field is false in UIA structure. Like it works in .NET Core 3.1 or .NET Framework.

Minimal repro:
- Open the attached TestApp.zip project in VS, run it and launch the Inspect tool.
- Click on the DomainUpDown edit control and move the mouse pointer to focus on the whole DomainUpDown control.
- Observe the IsKeyboardFocusable and HasKeyboardFocus fields' value in Inspect UIA structure.
