Update Material 2 tests group comment (#127796)

fixes https://github.com/flutter/flutter/issues/127795

packages/flutter/test/material/about_test.dart

@@ -1270,8 +1270,9 @@ void main() {
   });
 
   group('Material 2', () {
-    // Tests that are only relevant for Material 2. Once ThemeData.useMaterial3
-    // is turned on by default, these tests can be removed.
+    // These tests are only relevant for Material 2. Once Material 2
+    // support is deprecated and the APIs are removed, these tests
+    // can be deleted.
 
     testWidgetsWithLeakTracking('License page default title text color in the nested UI', (WidgetTester tester) async {
       // This is a regression test for https://github.com/flutter/flutter/issues/108991

packages/flutter/test/material/app_bar_test.dart

@@ -4935,8 +4935,9 @@ void main() {
   });
 
   group('Material 2', () {
-    // Tests that are only relevant for Material 2. Once ThemeData.useMaterial3
-    // is turned on by default, these tests can be removed.
+    // These tests are only relevant for Material 2. Once Material 2
+    // support is deprecated and the APIs are removed, these tests
+    // can be deleted.
 
     testWidgets('SliverAppBar.medium defaults', (WidgetTester tester) async {
       final ThemeData theme = ThemeData(useMaterial3: false);

packages/flutter/test/material/banner_theme_test.dart

@@ -449,8 +449,9 @@ void main() {
   });
 
   group('Material 2', () {
-    // Tests that are only relevant for Material 2. Once ThemeData.useMaterial3
-    // is turned on by default, these tests can be removed.
+    // These tests are only relevant for Material 2. Once Material 2
+    // support is deprecated and the APIs are removed, these tests
+    // can be deleted.
 
     testWidgets('Passing no MaterialBannerThemeData returns defaults', (WidgetTester tester) async {
       const String contentText = 'Content';

packages/flutter/test/material/card_theme_test.dart

@@ -161,8 +161,9 @@ void main() {
   });
 
   group('Material 2', () {
-    // Tests that are only relevant for Material 2. Once ThemeData.useMaterial3
-    // is turned on by default, these tests can be removed.
+    // These tests are only relevant for Material 2. Once Material 2
+    // support is deprecated and the APIs are removed, these tests
+    // can be deleted.
 
     testWidgets('Passing no CardTheme returns defaults - M2', (WidgetTester tester) async {
       await tester.pumpWidget(MaterialApp(

packages/flutter/test/material/circle_avatar_test.dart

@@ -282,8 +282,9 @@ void main() {
   });
 
   group('Material 2', () {
-    // Tests that are only relevant for Material 2. Once ThemeData.useMaterial3
-    // is turned on by default, these tests can be removed.
+    // These tests are only relevant for Material 2. Once Material 2
+    // support is deprecated and the APIs are removed, these tests
+    // can be deleted.
 
     testWidgets('CircleAvatar default colors with light theme', (WidgetTester tester) async {
       final ThemeData theme = ThemeData(primaryColor: Colors.grey.shade100);

packages/flutter/test/material/date_picker_test.dart

@@ -1857,8 +1857,9 @@ void main() {
   });
 
   group('Material 2', () {
-    // Tests that are only relevant for Material 2. Once ThemeData.useMaterial3
-    // is turned on by default, these tests can be removed.
+    // These tests are only relevant for Material 2. Once Material 2
+    // support is deprecated and the APIs are removed, these tests
+    // can be deleted.
 
     group('showDatePicker Dialog', () {
       testWidgets('Default dialog size', (WidgetTester tester) async {

packages/flutter/test/material/date_range_picker_test.dart

@@ -1462,8 +1462,9 @@ void main() {
 
 
   group('Material 2', () {
-    // Tests that are only relevant for Material 2. Once ThemeData.useMaterial3
-    // is turned on by default, these tests can be removed.
+    // These tests are only relevant for Material 2. Once Material 2
+    // support is deprecated and the APIs are removed, these tests
+    // can be deleted.
 
     testWidgets('Default layout (calendar mode)', (WidgetTester tester) async {
       await preparePicker(tester, (Future<DateTimeRange?> range) async {

packages/flutter/test/material/divider_theme_test.dart

@@ -266,8 +266,9 @@ void main() {
   });
 
   group('Material 2', () {
-    // Tests that are only relevant for Material 2. Once ThemeData.useMaterial3
-    // is turned on by default, these tests can be removed.
+    // These tests are only relevant for Material 2. Once Material 2
+    // support is deprecated and the APIs are removed, these tests
+    // can be deleted.
 
     group('Horizontal Divider', () {
       testWidgets('Passing no DividerThemeData returns defaults', (WidgetTester tester) async {

packages/flutter/test/material/drawer_test.dart

@@ -740,8 +740,9 @@ void main() {
   });
 
   group('Material 2', () {
-    // Tests that are only relevant for Material 2. Once ThemeData.useMaterial3
-    // is turned on by default, these tests can be removed.
+    // These tests are only relevant for Material 2. Once Material 2
+    // support is deprecated and the APIs are removed, these tests
+    // can be deleted.
 
     testWidgets('Drawer default shape', (WidgetTester tester) async {
       await tester.pumpWidget(

packages/flutter/test/material/expansion_tile_test.dart

@@ -892,8 +892,9 @@ void main() {
   }, variant: const TargetPlatformVariant(<TargetPlatform>{ TargetPlatform.iOS, TargetPlatform.macOS }));
 
   group('Material 2', () {
-    // Tests that are only relevant for Material 2. Once ThemeData.useMaterial3
-    // is turned on by default, these tests can be removed.
+    // These tests are only relevant for Material 2. Once Material 2
+    // support is deprecated and the APIs are removed, these tests
+    // can be deleted.
 
     testWidgets('ExpansionTile default iconColor, textColor', (WidgetTester tester) async {
       final ThemeData theme = ThemeData(useMaterial3: false);

packages/flutter/test/material/floating_action_button_test.dart

@@ -1073,8 +1073,9 @@ void main() {
   });
 
   group('Material 2', () {
-    // Tests that are only relevant for Material 2. Once ThemeData.useMaterial3
-    // is turned on by default, these tests can be removed.
+    // These tests are only relevant for Material 2. Once Material 2
+    // support is deprecated and the APIs are removed, these tests
+    // can be deleted.
 
     testWidgets('Floating Action Button elevation when highlighted - effect', (WidgetTester tester) async {
       await tester.pumpWidget(

packages/flutter/test/material/list_tile_test.dart

@@ -2479,8 +2479,9 @@ void main() {
   });
 
   group('Material 2', () {
-    // Tests that are only relevant for Material 2. Once ThemeData.useMaterial3
-    // is turned on by default, these tests can be removed.
+    // These tests are only relevant for Material 2. Once Material 2
+    // support is deprecated and the APIs are removed, these tests
+    // can be deleted.
 
     testWidgets('ListTile geometry (LTR)', (WidgetTester tester) async {
       // See https://material.io/go/design-lists

packages/flutter/test/material/navigation_bar_test.dart

@@ -915,8 +915,9 @@ void main() {
   });
 
   group('Material 2', () {
-    // Tests that are only relevant for Material 2. Once ThemeData.useMaterial3
-    // is turned on by default, these tests can be removed.
+    // These tests are only relevant for Material 2. Once Material 2
+    // support is deprecated and the APIs are removed, these tests
+    // can be deleted.
 
     testWidgets('Navigation destination updates indicator color and shape', (WidgetTester tester) async {
       final ThemeData theme = ThemeData(useMaterial3: false);

packages/flutter/test/material/navigation_rail_test.dart

@@ -3137,7 +3137,10 @@ void main() {
   });
 
   group('Material 2', () {
-    // Original Material 2 tests. Remove this group after `useMaterial3` has been deprecated.
+    // These tests are only relevant for Material 2. Once Material 2
+    // support is deprecated and the APIs are removed, these tests
+    // can be deleted.
+
     testWidgets('Renders at the correct default width - [labelType]=none (default)', (WidgetTester tester) async {
       await _pumpNavigationRail(
         tester,

packages/flutter/test/material/popup_menu_theme_test.dart

@@ -400,8 +400,9 @@ void main() {
   });
 
   group('Material 2', () {
-    // Tests that are only relevant for Material 2. Once ThemeData.useMaterial3
-    // is turned on by default, these tests can be removed.
+    // These tests are only relevant for Material 2. Once Material 2
+    // support is deprecated and the APIs are removed, these tests
+    // can be deleted.
 
     testWidgets('Passing no PopupMenuThemeData returns defaults', (WidgetTester tester) async {
      final Key popupButtonKey = UniqueKey();

packages/flutter/test/material/slider_test.dart

@@ -3632,8 +3632,9 @@ void main() {
   });
 
   group('Material 2', () {
-    // Tests that are only relevant for Material 2. Once ThemeData.useMaterial3
-    // is turned on by default, these tests can be removed.
+    // These tests are only relevant for Material 2. Once Material 2
+    // support is deprecated and the APIs are removed, these tests
+    // can be deleted.
 
     testWidgets('Slider can be hovered and has correct hover color', (WidgetTester tester) async {
       tester.binding.focusManager.highlightStrategy = FocusHighlightStrategy.alwaysTraditional;

packages/flutter/test/material/slider_theme_test.dart

@@ -2075,8 +2075,9 @@ void main() {
   });
 
   group('Material 2', () {
-    // Tests that are only relevant for Material 2. Once ThemeData.useMaterial3
-    // is turned on by default, these tests can be removed.
+    // These tests are only relevant for Material 2. Once Material 2
+    // support is deprecated and the APIs are removed, these tests
+    // can be deleted.
 
     testWidgets('Slider defaults', (WidgetTester tester) async {
       debugDisableShadows = false;

packages/flutter/test/material/tab_bar_theme_test.dart

@@ -614,8 +614,9 @@ void main() {
   });
 
   group('Material 2', () {
-    // Tests that are only relevant for Material 2. Once ThemeData.useMaterial3
-    // is turned on by default, these tests can be removed.
+    // These tests are only relevant for Material 2. Once Material 2
+    // support is deprecated and the APIs are removed, these tests
+    // can be deleted.
 
     testWidgets('Tab bar defaults (primary)', (WidgetTester tester) async {
     // Test default label color and label styles.

packages/flutter/test/material/tabs_test.dart

@@ -6015,8 +6015,9 @@ void main() {
   });
 
   group('Material 2', () {
-    // Tests that are only relevant for Material 2. Once ThemeData.useMaterial3
-    // is turned on by default, these tests can be removed.
+    // These tests are only relevant for Material 2. Once Material 2
+    // support is deprecated and the APIs are removed, these tests
+    // can be deleted.
 
     testWidgets('TabBar default selected/unselected text style', (WidgetTester tester) async {
       final ThemeData theme = ThemeData(useMaterial3: false);

packages/flutter/test/material/value_indicating_slider_test.dart

@@ -189,8 +189,9 @@ void main() {
   });
 
   group('Material 2', () {
-    // Tests that are only relevant for Material 2. Once ThemeData.useMaterial3
-    // is turned on by default, these tests can be removed.
+    // These tests are only relevant for Material 2. Once Material 2
+    // support is deprecated and the APIs are removed, these tests
+    // can be deleted.
 
     testWidgets('Slider value indicator', (WidgetTester tester) async {
       await _buildValueIndicatorStaticSlider(