Merge branch '432513-policies-existing-policy-scope' into 'master'

Add policy scope on project level

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/143877



Merged-by: Alexander Turinske <aturinske@gitlab.com>
Approved-by: Alexander Turinske <aturinske@gitlab.com>
Approved-by: Grant Hickman <ghickman@gitlab.com>
Approved-by: Camellia X Yang <xyang@gitlab.com>
Approved-by: Ross Byrne <robyrne@gitlab.com>
Reviewed-by: Artur Fedorov <afedorov@gitlab.com>
Co-authored-by: Artur Fedorov <afedorov@gitlab.com>