Add button semantics in list tile (#151599)

fixes: flutter/flutter#111960 

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Author: hannah-hyj

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

@@ -910,6 +910,7 @@ class ListTile extends StatelessWidget {
       autofocus: autofocus,
       enableFeedback: enableFeedback ?? tileTheme.enableFeedback ?? true,
       child: Semantics(
+        button: onTap != null || onLongPress != null,
         selected: selected,
         enabled: enabled,
         child: Ink(

packages/flutter/test/material/checkbox_list_tile_test.dart

@@ -1184,6 +1184,7 @@ void main() {
     ));
 
     expect(tester.getSemantics(find.byType(CheckboxListTile)), matchesSemantics(
+      isButton: true,
       hasCheckedState: true,
       isChecked: true,
       hasEnabledState: true,

packages/flutter/test/material/expansion_tile_test.dart

@@ -727,6 +727,7 @@ void main() {
     expect(
       tester.getSemantics(find.byType(ListTile).first),
       matchesSemantics(
+        isButton: true,
         hasTapAction: true,
         hasFocusAction: true,
         hasEnabledState: true,
@@ -742,6 +743,7 @@ void main() {
     expect(
       tester.getSemantics(find.byType(ListTile).last),
       matchesSemantics(
+        isButton: true,
         hasTapAction: true,
         hasFocusAction: true,
         hasEnabledState: true,

packages/flutter/test/material/list_tile_test.dart

@@ -304,6 +304,7 @@ void main() {
             ),
             TestSemantics.rootChild(
               flags: <SemanticsFlag>[
+                SemanticsFlag.isButton,
                 SemanticsFlag.hasEnabledState,
                 SemanticsFlag.isEnabled,
                 SemanticsFlag.isFocusable,

packages/flutter/test/material/radio_list_tile_test.dart

@@ -405,6 +405,7 @@ void main() {
             TestSemantics(
               id: 1,
               flags: <SemanticsFlag>[
+                SemanticsFlag.isButton,
                 SemanticsFlag.hasCheckedState,
                 SemanticsFlag.hasEnabledState,
                 SemanticsFlag.isEnabled,
@@ -441,6 +442,7 @@ void main() {
             TestSemantics(
               id: 1,
               flags: <SemanticsFlag>[
+                SemanticsFlag.isButton,
                 SemanticsFlag.hasCheckedState,
                 SemanticsFlag.isChecked,
                 SemanticsFlag.hasEnabledState,

packages/flutter/test/material/reorderable_list_test.dart

@@ -744,6 +744,7 @@ void main() {
             return false;
           });
           expect(child, matchesSemantics(
+            isButton: true,
             hasToggledState: true,
             isToggled: true,
             isEnabled: true,

packages/flutter/test/material/switch_list_tile_test.dart

@@ -72,6 +72,7 @@ void main() {
           id: 1,
           rect: const Rect.fromLTWH(0.0, 0.0, 800.0, 56.0),
           flags: <SemanticsFlag>[
+            SemanticsFlag.isButton,
             SemanticsFlag.hasEnabledState,
             SemanticsFlag.hasToggledState,
             SemanticsFlag.isEnabled,
@@ -86,6 +87,7 @@ void main() {
           rect: const Rect.fromLTWH(0.0, 0.0, 800.0, 56.0),
           transform: Matrix4.translationValues(0.0, 56.0, 0.0),
           flags: <SemanticsFlag>[
+            SemanticsFlag.isButton,
             SemanticsFlag.hasCheckedState,
             SemanticsFlag.hasEnabledState,
             SemanticsFlag.isChecked,
@@ -100,6 +102,7 @@ void main() {
           rect: const Rect.fromLTWH(0.0, 0.0, 800.0, 56.0),
           transform: Matrix4.translationValues(0.0, 112.0, 0.0),
           flags: <SemanticsFlag>[
+            SemanticsFlag.isButton,
             SemanticsFlag.hasCheckedState,
             SemanticsFlag.hasEnabledState,
             SemanticsFlag.isEnabled,