git_ui: Disable commit actions during commit message generation (#51727)

Release Notes:

- Add disable commit actions during commit message generation

---------

Signed-off-by: Xiaobo Liu <cppcoffee@gmail.com>
Co-authored-by: Cole Miller <cole@zed.dev>
Co-authored-by: zed-zippy[bot] <234243425+zed-zippy[bot]@users.noreply.github.com>
aa0923404fXiaobo Liu committed on 7/18/2026, 8:06:31 PM· committed by GitHubparent80a1add
2 files changedLine totals unavailable