fix(cli): do not override GOOGLE_CLOUD_PROJECT in Cloud Shell when using Vertex AI (#24455)

Co-authored-by: David Pierce <davidapierce@google.com>

packages/cli/src/test-utils/render.tsx

@@ -592,6 +592,7 @@ const mockUIActions: UIActions = {
   setActiveBackgroundTaskPid: vi.fn(),
   setIsBackgroundTaskListOpen: vi.fn(),
   setAuthContext: vi.fn(),
+  dismissLoginRestart: vi.fn(),
   onHintInput: vi.fn(),
   onHintBackspace: vi.fn(),
   onHintClear: vi.fn(),