Properly display deleted diff hunks (#9182)

Follow-up of https://github.com/zed-industries/zed/pull/9068 

Release Notes:

- Fixed removal diff hunks not being displayed properly in the editor
373a4e7614Kirill Bulatov committed on 3/11/2024, 3:53:45 PM· committed by GitHubparentf9f9f06
1 file changedLine totals unavailable