git: Prevent up and down motions leaking out of the commit editor (#26501)

Closes #ISSUE

Release Notes:

- Git Beta: fixed an issue where pressing `up` or `down` in the git
panel's commit message editor would change the selected status entry
d6255fb3d2Cole Miller committed on 3/12/2025, 4:01:08 AM· committed by GitHubparentf9a66ec
1 file changedLine totals unavailable