Improve VS profile generation (#19025)

* Make PowerShell profile generation try to find `pwsh.exe` before
falling back to legacy powershell
* Make profiles generated on an `arm64` host work properly

## Validation Steps Performed

* Local build ran
* Verified the new `arm64` profile works
* Verified `pwsh.exe` is used if present
* Verified `powershell.exe` is used if `pwsh` is not present in path
* Verified we don't attempt to create `arm64` host cmd/pwsh profiles if
VS is not >= 17.4