Scope git mutation state by cwd for action loading UI

- add `gitMutationKeys` and attach mutation keys across git mutation options
- switch GitActionsControl loading state to `useIsMutating` with cwd-scoped keys
- add tests for cwd-scoped mutation keys and mutation option wiring
1b98213d6dJulius Marminge committed on 2/27/2026, 3:22:47 AM· committed by Julius Marmingeparent0d67424
3 files changedLine totals unavailable