Merge branch 'admin-push-rules' into 'master'

Use SettingsBlockComponent for admin push rules

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/157611



Merged-by: Savas Vedova <svedova@gitlab.com>
Approved-by: Sascha Eggenberger <seggenberger@gitlab.com>
Approved-by: Thomas Hutterer <thutterer@gitlab.com>
Approved-by: Savas Vedova <svedova@gitlab.com>
Co-authored-by: Annabel Dunstone Gray <annabel.dunstone@gmail.com>