Fix note header author and time ago wrapping in parallel diff
What does this MR do?
- Fix note header author and time ago wrapping in parallel diff
See subsequent MR !11701 (merged) where we apply all the same responsive note styles to the parallel diff notes.
Are there points in the code the reviewer needs to double check?
Why was this MR needed?
Does this MR meet the acceptance criteria?
- All builds are passing
- Conform by the merge request performance guides
- Conform by the style guides
Branch has no merge conflicts with
master(if it does - rebase it please)
- Squashed related commits together
What are the relevant issue numbers?
Closes #32801 (closed)