Add toggle hunk diff and expand all hunk diffs key bindings (#14130)

Noticed these were missing when I was reading through the docs.

Release Notes:

- Add toggle hunk diff and expand all hunk diffs key bindings
36d3b16279Sensational Code committed on 7/11/2024, 3:22:52 AM· committed by GitHubparent945764e
1 file changedLine totals unavailable