We need to prevent editing and deleting of merge request rules after a merge request is merged.
To Test:
MergeRequest.merged.last.approval_rules
curl -X PUT -d 'approvals_required=1' -H "PRIVATE-TOKEN: TOKEN" "http://localhost:3000/api/v4/projects/PROJECT_ID/merge_requests/MR_IID/approval_rules/APPROVAL_RULE_ID" curl -X DELETE -H "PRIVATE-TOKEN: TOKEN" "http://localhost:3000/api/v4/projects/PROJECT_ID/merge_requests/MR_IID/approval_rules/APPROVAL_RULE_ID" curl -X POST -d 'name=a' -d 'approvals_required=1' -H "PRIVATE-TOKEN: TOKEN" "http://localhost:3000/api/v4/projects/PROJECT_ID/merge_requests/MR_IID/approval_rules"
Query Postgres.ai
https://console.postgres.ai/gitlab/gitlab-production-tunnel-pg12/sessions/24524/commands/78234
Related to #432961 (closed)
