3.38 / 3.10 (#2742)

This PR makes samples pass CI when 3.10 is released.

## Pre-launch Checklist

- [x] I read the [Flutter Style Guide] _recently_, and have followed its
advice.
- [x] I signed the [CLA].
- [x] I read the [Contributors Guide].
- [x] I have added sample code updates to the [changelog].
- [x] I updated/added relevant documentation (doc comments with `///`).

testing_app/integration_test/perf_test.dart

@@ -9,13 +9,11 @@ import 'package:testing_app/main.dart';
 
 void main() {
   group('Testing App Performance Tests', () {
-    final binding =
-        IntegrationTestWidgetsFlutterBinding.ensureInitialized();
+    final binding = IntegrationTestWidgetsFlutterBinding.ensureInitialized();
 
     // The fullyLive frame policy simulates
     // the way Flutter responds to animations.
-    binding.framePolicy =
-        LiveTestWidgetsFlutterBindingFramePolicy.fullyLive;
+    binding.framePolicy = LiveTestWidgetsFlutterBindingFramePolicy.fullyLive;
 
     testWidgets('Scrolling test', (tester) async {
       await tester.pumpWidget(const TestingApp());