As of WSA 2305.40000.6.0 on Windows 11 22621.2066, opening Google Assistant on WSA will ask you to make it your default assistant. Trying to do this will open Windows settings, instead of Android ...
In theory, this should work with any version of Windows 10 version 2004 (20H1) and above. This is because every update since then has been very minor, and the build number even still shows as 19041 ...