Refresh todos count cache when an Issue/MR is deleted
What does this MR do?
Refresh todos count cache when an Issue/MR is deleted.
Are there points in the code the reviewer needs to double check?
Why was this MR needed?
Deletion of Issues/MR's does not impact todos counters.
Screenshots (if relevant)
Does this MR meet the acceptance criteria?
- CHANGELOG entry added
- Added for this feature/bug
- All builds are passing
- Conform by the merge request performance guides
- Conform by the style guides
Branch has no merge conflicts with
master(if you do - rebase it please)
- Squashed related commits together
What are the relevant issue numbers?
Fixes #21714 (closed)