This PR adds basic support for keyboard navigation for the git graph panel. **Back and forward**: https://github.com/user-attachments/assets/5015b0d9-bf83-4944-8c9b-1c5b9badfdb4 **Scrolling**: https://github.com/user-attachments/assets/451badb5-59df-48a2-aa73-be5188d28dae - [x] Tests or screenshots needed? - [x] Code Reviewed - [x] Manual QA - Do we need to add keybinds for it, or is falling back to the default keybindings enough? **TODO**: - [x] Add auto scroll when you select the last visible item Release Notes: - N/A (no release notes since its behind a feature flag)