Use correct semantics for toggle buttons (#113851)

* Use correct semantics for toggle buttons

* x

packages/flutter/lib/src/material/toggle_buttons.dart

@@ -798,7 +798,7 @@ class ToggleButtons extends StatelessWidget {
       return MergeSemantics(
         child: Semantics(
           container: true,
-          toggled: isSelected[index],
+          checked: isSelected[index],
           enabled: onPressed != null,
           child: _InputPadding(
             minSize: minPaddingSize,

packages/flutter/test/material/toggle_buttons_test.dart

@@ -2006,7 +2006,7 @@ void main() {
                 SemanticsFlag.isButton,
                 SemanticsFlag.isEnabled,
                 SemanticsFlag.hasEnabledState,
-                SemanticsFlag.hasToggledState,
+                SemanticsFlag.hasCheckedState,
                 SemanticsFlag.isFocusable,
               ],
               actions: <SemanticsAction>[
@@ -2019,7 +2019,7 @@ void main() {
                 SemanticsFlag.isButton,
                 SemanticsFlag.isEnabled,
                 SemanticsFlag.hasEnabledState,
-                SemanticsFlag.hasToggledState,
+                SemanticsFlag.hasCheckedState,
                 SemanticsFlag.isFocusable,
               ],
               actions: <SemanticsAction>[
@@ -2032,7 +2032,7 @@ void main() {
                 SemanticsFlag.isButton,
                 SemanticsFlag.isEnabled,
                 SemanticsFlag.hasEnabledState,
-                SemanticsFlag.hasToggledState,
+                SemanticsFlag.hasCheckedState,
                 SemanticsFlag.isFocusable,
               ],
               actions: <SemanticsAction>[
@@ -2051,7 +2051,7 @@ void main() {
     semantics.dispose();
   });
 
-    testWidgets('Toggle buttons have correct semantics', (WidgetTester tester) async {
+  testWidgets('Toggle buttons have correct semantics', (WidgetTester tester) async {
     final SemanticsTester semantics = SemanticsTester(tester);
 
     await tester.pumpWidget(
@@ -2079,7 +2079,7 @@ void main() {
                 SemanticsFlag.isButton,
                 SemanticsFlag.isEnabled,
                 SemanticsFlag.hasEnabledState,
-                SemanticsFlag.hasToggledState,
+                SemanticsFlag.hasCheckedState,
                 SemanticsFlag.isFocusable,
               ],
               actions: <SemanticsAction>[
@@ -2091,8 +2091,8 @@ void main() {
                 SemanticsFlag.isButton,
                 SemanticsFlag.isEnabled,
                 SemanticsFlag.hasEnabledState,
-                SemanticsFlag.isToggled,
-                SemanticsFlag.hasToggledState,
+                SemanticsFlag.isChecked,
+                SemanticsFlag.hasCheckedState,
                 SemanticsFlag.isFocusable,
               ],
               actions: <SemanticsAction>[