Merge branch '440682-user-removed-as-codeowner-approver-by-saml-group-links' into 'master'

Avoid sub-group destruction in group link synchronization

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/150104



Merged-by: Thong Kuah <tkuah@gitlab.com>
Approved-by: Ross Byrne <robyrne@gitlab.com>
Approved-by: Smriti Garg <sgarg@gitlab.com>
Approved-by: Thong Kuah <tkuah@gitlab.com>
Reviewed-by: Patrick Cyiza <jpcyiza@gitlab.com>
Co-authored-by: Drew Blessing <drew@gitlab.com>
Co-authored-by: Patrick Cyiza <jpcyiza@gitlab.com>