CMakeDetermineCompilerId: use `_ARG1` to query the clang resource dir
Other core queries do this, so do it here too.
Manual-backport: release-3.28
Backport: release
Edited by Ben Boeckel
We are implementing enhanced network protection measures. During connection checks, you may briefly see a “verifying connection” screen. This is a normal part of our security process and requires no action.
Other core queries do this, so do it here too.
Manual-backport: release-3.28
Backport: release