Find-GitBash accepted the Microsoft Store / WSL bash.exe alias and only probed <root>\Git, so it never detected per-user Git for Windows installs under %LocalAppData%\Programs\Git and could skip the launcher's "install Git Bash" note even when no usable Git Bash was present.
Reject the WSL stub (system32/sysnative/windowsapps) and also probe %LocalAppData%\Programs\Git, mirroring core/platform_compat.find_bash.
Refs #3740