Make `powershell_under_root` visible under `cfg(test)` so the %SystemRoot%\System32\WindowsPowerShell\v1.0\powershell.exe layout is asserted on any host (the rest of the resolution is gated to Windows).
Make `powershell_under_root` visible under `cfg(test)` so the %SystemRoot%\System32\WindowsPowerShell\v1.0\powershell.exe layout is asserted on any host (the rest of the resolution is gated to Windows).