Fix bug where adding comment on opposite line would error
When adding a comment to the side that doesn’t have changes we force the comment to be added to the opposite side. E.g. adding a comment on the right-hand-side for a deletion will force the comment to be added to the left-hand-side.
When adding a comment to the side that doesn’t have changes we force the comment to be added to the opposite side. E.g. adding a comment on the right-hand-side for a deletion will force the comment to be added to the left-hand-side.