Merge branch '371942-clean-up-attention-request-related-system-note-metadata' into 'master'

Cleanup attention request related system notes

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/97753



Merged-by: Alex Ives <aives@gitlab.com>
Approved-by: Mehmet Emin INAC <minac@gitlab.com>
Approved-by: Alex Ives <aives@gitlab.com>
Co-authored-by: David Kim <dkim@gitlab.com>