fix DropdownMenu crash when resize window during menu showing (#124855)

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

@@ -542,7 +542,6 @@ class _DropdownMenuState<T> extends State<DropdownMenu<T>> {
           controller: _controller,
           menuChildren: menu,
           crossAxisUnconstrained: false,
-          onClose: () { setState(() {}); }, // To update the status of the IconButton
           builder: (BuildContext context, MenuController controller, Widget? child) {
             assert(_initialMenu != null);
             final Widget trailingButton = Padding(

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

@@ -342,7 +342,7 @@ class _MenuAnchorState extends State<MenuAnchor> {
       // Needs to update the overlay entry on the next frame, since it's in the
       // overlay.
       SchedulerBinding.instance.addPostFrameCallback((Duration _) {
-        _overlayEntry!.markNeedsBuild();
+        _overlayEntry?.markNeedsBuild();
       });
     }
   }
@@ -556,8 +556,9 @@ class _MenuAnchorState extends State<MenuAnchor> {
       // Notify that _childIsOpen changed state, but only if not
       // currently disposing.
       _parent?._childChangedOpenState();
+      widget.onClose?.call();
+      setState(() {});
     }
-    widget.onClose?.call();
   }
 
   void _closeChildren({bool inDispose = false}) {

packages/flutter/test/material/dropdown_menu_test.dart

@@ -405,6 +405,70 @@ void main() {
     expect(menuMaterial, findsOneWidget);
   });
 
+  testWidgets('Leading IconButton status test', (WidgetTester tester) async {
+    final ThemeData themeData = ThemeData(useMaterial3: true);
+    await tester.pumpWidget(buildTest(themeData, menuChildren, width: 100.0, menuHeight: 100.0));
+    await tester.pump();
+
+    Finder iconButton = find.widgetWithIcon(IconButton, Icons.arrow_drop_up);
+    expect(iconButton, findsNothing);
+    iconButton = find.widgetWithIcon(IconButton, Icons.arrow_drop_down).first;
+    expect(iconButton, findsOneWidget);
+
+    await tester.tap(iconButton);
+    await tester.pump();
+
+    iconButton = find.widgetWithIcon(IconButton, Icons.arrow_drop_up).first;
+    expect(iconButton, findsOneWidget);
+    iconButton = find.widgetWithIcon(IconButton, Icons.arrow_drop_down);
+    expect(iconButton, findsNothing);
+
+    // Tap outside
+    await tester.tapAt(const Offset(500.0, 500.0));
+    await tester.pump();
+
+    iconButton = find.widgetWithIcon(IconButton, Icons.arrow_drop_up);
+    expect(iconButton, findsNothing);
+    iconButton = find.widgetWithIcon(IconButton, Icons.arrow_drop_down).first;
+    expect(iconButton, findsOneWidget);
+  });
+
+  testWidgets('Do not crash when resize window during menu opening', (WidgetTester tester) async {
+    addTearDown(tester.view.reset);
+    final ThemeData themeData = ThemeData();
+    await tester.pumpWidget(MaterialApp(
+      theme: themeData,
+      home: Scaffold(
+        body: StatefulBuilder(
+          builder: (BuildContext context, StateSetter setState){
+            return DropdownMenu<TestMenu>(
+              width: MediaQuery.of(context).size.width,
+              dropdownMenuEntries: menuChildren,
+            );
+          },
+        ),
+      ),
+    ));
+
+    final Finder iconButton = find.widgetWithIcon(IconButton, Icons.arrow_drop_down).first;
+    expect(iconButton, findsOneWidget);
+
+    await tester.tap(iconButton);
+    await tester.pump();
+
+    final Finder menuMaterial = find.ancestor(
+      of: find.widgetWithText(MenuItemButton, TestMenu.mainMenu0.label),
+      matching: find.byType(Material),
+    ).last;
+    expect(menuMaterial, findsOneWidget);
+
+    // didChangeMetrics
+    tester.view.physicalSize = const Size(700.0, 700.0);
+    await tester.pump();
+
+    // Go without throw.
+  });
+
   testWidgets('DropdownMenu can customize trailing icon button', (WidgetTester tester) async {
     final ThemeData themeData = ThemeData();
     await tester.pumpWidget(MaterialApp(