File Open/Save Dialog doesn't work with automatic elevation (uiAccess=true)

Description
Based on https://github.com/MicrosoftEdge/WebView2Feedback/issues/802, Webview2 can now show file dialog when 'Run as administrator'. But it still does not work with automatic elevation using 'uiAccess=true' method.

Version
SDK: 1.0.1549-prerelease, 1.0.1462.37
Runtime: 108.0.1462.54
Framework: WPF 4.7.2
OS: Windows11 22H2 (22621.963)

Repro Steps

I have made a sample exe program that demo the situation:
Debug.zip

1) Works ok without automatic elevation:
a. extract zip file to a folder on desktop or other normal dir.
b. double click 'WebView2UiAccess.exe' to start the program.
c. click the input button, file dialog will show.

2) Not work when automatic elevated:
a. copy extracted files into a folder in c:\Program files , for example c:\Program files\test
b. double click 'WebView2UiAccess.exe' to start the program.
c. click the input button, file dialog will not show.

Source code (need to change code sign cert file path and password in project properties):
WebView2UiAccess.zip

Screenshots

Additional context
How to make exe automatic elevate:

1. add app.manifest file, and set uiAccess="true"
2. Code sign the output exe with certificate.
3. Install into a secure location, like c:\program files\xxx

AB#42852542