Cover more tests with leak tracking. (flutter#134363)

packages/flutter/test/material/about_test.dart

@@ -1460,7 +1460,7 @@ void main() {
     expect(find.text('Exception: Injected failure'), findsOneWidget);
   });
 
-  testWidgets('Material2 - LicensePage master view layout position - ltr', (WidgetTester tester) async {
+  testWidgetsWithLeakTracking('Material2 - LicensePage master view layout position - ltr', (WidgetTester tester) async {
     const TextDirection textDirection = TextDirection.ltr;
     const Size defaultSize = Size(800.0, 600.0);
     const Size wideSize = Size(1200.0, 600.0);
@@ -1592,7 +1592,7 @@ void main() {
     expect(tester.getCenter(find.byType(ListView)), const Offset(160, 356));
   });
 
-  testWidgets('Material2 - LicensePage master view layout position - rtl', (WidgetTester tester) async {
+  testWidgetsWithLeakTracking('Material2 - LicensePage master view layout position - rtl', (WidgetTester tester) async {
     const TextDirection textDirection = TextDirection.rtl;
     const Size defaultSize = Size(800.0, 600.0);
     const Size wideSize = Size(1200.0, 600.0);
@@ -1657,7 +1657,7 @@ void main() {
     expect(tester.getCenter(find.byType(ListView)), const Offset(1040.0, 356.0));
   });
 
-  testWidgets('Material3 - LicensePage master view layout position - rtl', (WidgetTester tester) async {
+  testWidgetsWithLeakTracking('Material3 - LicensePage master view layout position - rtl', (WidgetTester tester) async {
     const TextDirection textDirection = TextDirection.rtl;
     const Size defaultSize = Size(800.0, 600.0);
     const Size wideSize = Size(1200.0, 600.0);
@@ -1724,7 +1724,7 @@ void main() {
     expect(tester.getCenter(find.byType(ListView)), const Offset(1040.0, 356.0));
   });
 
-  testWidgets('License page title in lateral UI does not use AppBarTheme.foregroundColor', (WidgetTester tester) async {
+  testWidgetsWithLeakTracking('License page title in lateral UI does not use AppBarTheme.foregroundColor', (WidgetTester tester) async {
     // This is a regression test for https://github.com/flutter/flutter/issues/108991
     final ThemeData theme = ThemeData(
       appBarTheme: const AppBarTheme(foregroundColor: Color(0xFFFFFFFF)),

packages/flutter/test/material/bottom_sheet_theme_test.dart

@@ -170,7 +170,7 @@ void main() {
     expect(material.clipBehavior, clipBehavior);
   });
 
-  testWidgets('Modal bottom sheet-specific parameters are used for modal bottom sheets', (WidgetTester tester) async {
+  testWidgetsWithLeakTracking('Modal bottom sheet-specific parameters are used for modal bottom sheets', (WidgetTester tester) async {
     const double modalElevation = 5.0;
     const double persistentElevation = 7.0;
     const Color modalBackgroundColor = Colors.yellow;
@@ -249,7 +249,7 @@ void main() {
     expect(material.color, null);
   });
 
-  testWidgets('Modal bottom sheets respond to theme changes', (WidgetTester tester) async {
+  testWidgetsWithLeakTracking('Modal bottom sheets respond to theme changes', (WidgetTester tester) async {
     const double lightElevation = 5.0;
     const double darkElevation = 3.0;
     const Color lightBackgroundColor = Colors.green;

packages/flutter/test/material/button_theme_test.dart

@@ -4,6 +4,7 @@
 
 import 'package:flutter/material.dart';
 import 'package:flutter_test/flutter_test.dart';
+import 'package:leak_tracker_flutter_testing/leak_tracker_flutter_testing.dart';
 
 
 void main() {
@@ -67,7 +68,7 @@ void main() {
     expect(theme.colorScheme, const ColorScheme.dark());
   });
 
-  testWidgets('ButtonTheme alignedDropdown', (WidgetTester tester) async {
+  testWidgetsWithLeakTracking('ButtonTheme alignedDropdown', (WidgetTester tester) async {
     final Key dropdownKey = UniqueKey();
 
     Widget buildFrame({ required bool alignedDropdown, required TextDirection textDirection }) {

packages/flutter/test/material/drawer_test.dart

@@ -213,7 +213,7 @@ void main() {
     expect(state.isEndDrawerOpen, equals(false));
   });
 
-  testWidgets('Scaffold.drawer - null restorationId ', (WidgetTester tester) async {
+  testWidgetsWithLeakTracking('Scaffold.drawer - null restorationId ', (WidgetTester tester) async {
     final GlobalKey<ScaffoldState> scaffoldKey = GlobalKey<ScaffoldState>();
     await tester.pumpWidget(
       MaterialApp(
@@ -236,7 +236,7 @@ void main() {
     expect(find.text('drawer'), findsNothing);
   });
 
-  testWidgets('Scaffold.endDrawer - null restorationId ', (WidgetTester tester) async {
+  testWidgetsWithLeakTracking('Scaffold.endDrawer - null restorationId ', (WidgetTester tester) async {
     final GlobalKey<ScaffoldState> scaffoldKey = GlobalKey<ScaffoldState>();
     await tester.pumpWidget(
       MaterialApp(
@@ -259,7 +259,7 @@ void main() {
     expect(find.text('endDrawer'), findsNothing);
   });
 
-  testWidgets('Scaffold.drawer state restoration test', (WidgetTester tester) async {
+  testWidgetsWithLeakTracking('Scaffold.drawer state restoration test', (WidgetTester tester) async {
     final GlobalKey<ScaffoldState> scaffoldKey = GlobalKey<ScaffoldState>();
     await tester.pumpWidget(
       MaterialApp(
@@ -290,7 +290,7 @@ void main() {
     expect(find.text('drawer'), findsOneWidget);
   });
 
-  testWidgets('Scaffold.endDrawer state restoration test', (WidgetTester tester) async {
+  testWidgetsWithLeakTracking('Scaffold.endDrawer state restoration test', (WidgetTester tester) async {
     final GlobalKey<ScaffoldState> scaffoldKey = GlobalKey<ScaffoldState>();
     await tester.pumpWidget(
       MaterialApp(
@@ -321,7 +321,7 @@ void main() {
     expect(find.text('endDrawer'), findsOneWidget);
   });
 
-  testWidgets('Both drawer and endDrawer state restoration test', (WidgetTester tester) async {
+  testWidgetsWithLeakTracking('Both drawer and endDrawer state restoration test', (WidgetTester tester) async {
     final GlobalKey<ScaffoldState> scaffoldKey = GlobalKey<ScaffoldState>();
     await tester.pumpWidget(
       MaterialApp(