fix(source-control): keep huge change sets responsive (#9477)

* fix(source-control): keep huge change sets responsive

* Fix cancellation and retry handling for capped status

* Harden capped status for conflict-heavy repositories

* Harden capped status recovery and cancellation

* fix(source-control): preserve capped status correctness

* fix(source-control): translate submodule status at render time

---------

Co-authored-by: Brennan Benson <79079362+brennanb2025@users.noreply.github.com>

src/main/runtime/rpc/methods/git.test.ts

@@ -16,7 +16,9 @@ describe('git RPC methods', () => {
         entries: [],
         conflictOperation: 'unknown',
         branch: 'main',
-        head: 'abc'
+        head: 'abc',
+        didHitLimit: true,
+        statusLength: 1_001
       })
     } as unknown as OrcaRuntimeService
     const dispatcher = new RpcDispatcher({ runtime, methods: GIT_METHODS })
@@ -26,7 +28,7 @@ describe('git RPC methods', () => {
     expect(runtime.getRuntimeGitStatus).toHaveBeenCalledWith('id:wt-1')
     expect(response).toMatchObject({
       ok: true,
-      result: { entries: [], branch: 'main' }
+      result: { entries: [], branch: 'main', didHitLimit: true, statusLength: 1_001 }
     })
   })