git_ui: Fix item heights in git panel (#25833)

- Fixes items slightly overlapping in the git panel
- Fixes commit button in the project diff not opening modal

Release Notes:

- N/A

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Co-authored-by: Nate Butler <iamnbutler@gmail.com>
Co-authored-by: Cole Miller <m@cole-miller.net>
b34c0fd71bMax Brunsfeld committed on 3/3/2025, 2:39:24 PM· committed by GitHubparente0060b9
4 files changedLine totals unavailable