Merge branch '439167-restrict-member-roles-ff' into 'master'

Allow creation of group-level roles on self-managed instances

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/142637



Merged-by: Jarka Košanová <jarka@gitlab.com>
Approved-by: Harsha Muralidhar <hmuralidhar@gitlab.com>
Approved-by: Jarka Košanová <jarka@gitlab.com>
Approved-by: Vijay Hawoldar <vhawoldar@gitlab.com>
Reviewed-by: Vijay Hawoldar <vhawoldar@gitlab.com>
Reviewed-by: Hinam Mehra <hmehra@gitlab.com>
Co-authored-by: Hinam Mehra <hmehra@gitlab.com>