Add ability to comment on files with `hide whitespace changes` setting on
Problem to Solve
In #338844 (closed) we made the decision to disable commenting on files when the setting hide whitesspace changes
was turned on. This means that commenting in merge requests is only supported in the default view which can make it harder to review diffs and leave feedback when lots of whitespace changes are visible.
Proposal
We should add the ability to comment on files with whitespace changes hidden.