Format on_enter_test.dart

Author: ArinFaraj

packages/go_router/test/on_enter_test.dart

@@ -1567,7 +1567,9 @@ void main() {
         expect(find.text('Allowed'), findsOneWidget);
 
         // 2. Pop (simulating system back / imperative pop)
-        final NavigatorState navigator = tester.state(find.byType(Navigator).last);
+        final NavigatorState navigator = tester.state(
+          find.byType(Navigator).last,
+        );
         navigator.pop();
         await tester.pumpAndSettle();
         expect(find.text('Home'), findsOneWidget);