Disable test order randomization on some leak tracker tests that are failing...

Disable test order randomization on some leak tracker tests that are failing with today's seed (#132766)

packages/flutter/test/material/menu_bar_theme_test.dart

@@ -2,6 +2,10 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
+// Fails with "flutter test --test-randomize-ordering-seed=20230817"
+@Tags(<String>['no-shuffle'])
+library;
+
 import 'package:flutter/material.dart';
 import 'package:flutter_test/flutter_test.dart';
 import 'package:leak_tracker_flutter_testing/leak_tracker_flutter_testing.dart';

packages/flutter/test/material/menu_theme_test.dart

@@ -2,6 +2,10 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
+// Fails with "flutter test --test-randomize-ordering-seed=20230817"
+@Tags(<String>['no-shuffle'])
+library;
+
 import 'package:flutter/material.dart';
 import 'package:flutter_test/flutter_test.dart';
 import 'package:leak_tracker_flutter_testing/leak_tracker_flutter_testing.dart';