cover more tests with leak tracking (#134837)

packages/flutter/test/scheduler/ticker_test.dart

@@ -6,6 +6,7 @@ import 'package:flutter/foundation.dart';
 import 'package:flutter/scheduler.dart';
 import 'package:flutter/services.dart';
 import 'package:flutter_test/flutter_test.dart';
+import 'package:leak_tracker_flutter_testing/leak_tracker_flutter_testing.dart';
 
 void main() {
   Future<void> setAppLifeCycleState(AppLifecycleState state) async {
@@ -15,7 +16,7 @@ void main() {
         .handlePlatformMessage('flutter/lifecycle', message, (_) {});
   }
 
-  testWidgets('Ticker mute control test', (WidgetTester tester) async {
+  testWidgetsWithLeakTracking('Ticker mute control test', (WidgetTester tester) async {
     int tickCount = 0;
     void handleTick(Duration duration) {
       tickCount += 1;
@@ -97,7 +98,7 @@ void main() {
     expect(ticker.isActive, isFalse);
   });
 
-  testWidgets('Ticker control test', (WidgetTester tester) async {
+  testWidgetsWithLeakTracking('Ticker control test', (WidgetTester tester) async {
     late Ticker ticker;
 
     void testFunction() {
@@ -110,7 +111,7 @@ void main() {
     expect(ticker.toString(debugIncludeStack: true), contains('testFunction'));
   });
 
-  testWidgets('Ticker can be sped up with time dilation', (WidgetTester tester) async {
+  testWidgetsWithLeakTracking('Ticker can be sped up with time dilation', (WidgetTester tester) async {
     timeDilation = 0.5; // Move twice as fast.
     late Duration lastDuration;
     void handleTick(Duration duration) {
@@ -128,7 +129,7 @@ void main() {
     timeDilation = 1.0; // restore time dilation, or it will affect other tests
   });
 
-  testWidgets('Ticker can be slowed down with time dilation', (WidgetTester tester) async {
+  testWidgetsWithLeakTracking('Ticker can be slowed down with time dilation', (WidgetTester tester) async {
     timeDilation = 2.0; // Move half as fast.
     late Duration lastDuration;
     void handleTick(Duration duration) {
@@ -146,7 +147,7 @@ void main() {
     timeDilation = 1.0; // restore time dilation, or it will affect other tests
   });
 
-  testWidgets('Ticker stops ticking when application is paused', (WidgetTester tester) async {
+  testWidgetsWithLeakTracking('Ticker stops ticking when application is paused', (WidgetTester tester) async {
     int tickCount = 0;
     void handleTick(Duration duration) {
       tickCount += 1;
@@ -169,7 +170,7 @@ void main() {
     setAppLifeCycleState(AppLifecycleState.resumed);
   });
 
-  testWidgets('Ticker can be created before application unpauses', (WidgetTester tester) async {
+  testWidgetsWithLeakTracking('Ticker can be created before application unpauses', (WidgetTester tester) async {
     setAppLifeCycleState(AppLifecycleState.paused);
 
     int tickCount = 0;