Update builder_test.dart

packages/go_router/test/builder_test.dart

@@ -424,6 +424,7 @@ class _BuilderTestWidget extends StatelessWidget {
       restorationScopeId: null,
       observers: <NavigatorObserver>[],
       onPopPageWithRouteMatch: (_, __, ___) => false,
+      requestFocus: null,
     );
   }