Merge branch '413783-fix-approvers-data' into 'master'

Fix approvers loading for approval_policy type

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/144184



Merged-by: Sashi Kumar Kumaresan <skumar@gitlab.com>
Approved-by: Dominic Bauer <dbauer@gitlab.com>
Approved-by: Sashi Kumar Kumaresan <skumar@gitlab.com>
Co-authored-by: Martin Čavoj <mcavoj@gitlab.com>