labeledTapTargetGuideline should passe if textfield does not have label (#116221)

Author: chunhtai

packages/flutter_test/lib/src/accessibility.dart

@@ -219,7 +219,8 @@ class LabeledTapTargetGuideline extends AccessibilityGuideline {
       });
       if (node.isMergedIntoParent ||
           node.isInvisible ||
-          node.hasFlag(ui.SemanticsFlag.isHidden)) {
+          node.hasFlag(ui.SemanticsFlag.isHidden) ||
+          node.hasFlag(ui.SemanticsFlag.isTextField)) {
         return result;
       }
       final SemanticsData data = node.getSemanticsData();

packages/flutter_test/test/accessibility_test.dart

@@ -874,6 +874,14 @@ void main() {
       expect(result.passed, true);
       handle.dispose();
     });
+
+    testWidgets('Passes if text field does not have label', (WidgetTester tester) async {
+      final SemanticsHandle handle = tester.ensureSemantics();
+      await tester.pumpWidget(_boilerplate(const TextField()));
+      final Evaluation result = await labeledTapTargetGuideline.evaluate(tester);
+      expect(result.passed, true);
+      handle.dispose();
+    });
   });
 
   testWidgets('regression test for material widget',