Merge branch '519883-handle-duo-code-review-assignment-timing-issue-on-mr-creation' into 'master'

Delay Duo Code Review until MR has diffs

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/182372



Merged-by: Smriti Garg <sgarg@gitlab.com>
Approved-by: Patrick Bajao <ebajao@gitlab.com>
Approved-by: Smriti Garg <sgarg@gitlab.com>
Reviewed-by: Patrick Bajao <ebajao@gitlab.com>
Reviewed-by: Sincheol (David) Kim <dkim@gitlab.com>
Reviewed-by: GitLab Duo <gitlab-duo@gitlab.com>
Co-authored-by: David Kim <dkim@gitlab.com>