PUT /api/projects/:id/merge_requests/:noteable_id/notes/:note_id executes more than 100 SQL queries

As of this writing (2021-03-23), the PUT /api/projects/:id/merge_requests/:noteable_id/notes/:note_id endpoint can execute around 147 SQL queries max.

In average though, it only takes ~45 queries. This shows that there's a possible N+1 issue here.