I ran across this today and am documenting it in case it helps others. To make WSL work with GlobalProtect VPN, add the following into a file called "wslconfig" under your %USERPROFILE%\ directory:
[wsl2]
networkingMode=mirrored
dnsTunneling=true
Then in a powershell, run the following:
wsl --shutdown
wsl --update
Now when you start wsl, it should have network access.
