Disable commenting on unrelatable diff line
What does this MR do?
Fixes a bug where users can comment on diff lines that can't be commented on and attached to.
This is the case for unfolded lines and lines that appear as snippets in the discussion tab.
!5864 (merged) should be merged before this MR.
Are there points in the code the reviewer needs to double check?
Why was this MR needed?
Comments were getting lost on the discussion feed, unable to find their related diff.
What are the relevant issue numbers?
Closes #20633 (closed).
Screenshots (if relevant)
Does this MR meet the acceptance criteria?
-
CHANGELOG entry added -
Documentation created/updated -
API support added - Tests
-
Added for this feature/bug -
All builds are passing
-
-
Conform by the style guides -
Branch has no merge conflicts with master(if you do - rebase it please) -
Squashed related commits together