Fixed leak and removed no-shuffle tag in widgets/debug_test.dart (#88857)

packages/flutter/test/widgets/debug_test.dart

@@ -2,12 +2,6 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-// TODO(gspencergoog): Remove this tag once this test's state leaks/test
-// dependencies have been fixed.
-// https://github.com/flutter/flutter/issues/85160
-// Fails with "flutter test --test-randomize-ordering-seed=123"
-@Tags(<String>['no-shuffle'])
-
 import 'package:flutter/foundation.dart';
 import 'package:flutter/widgets.dart';
 import 'package:flutter_test/flutter_test.dart';
@@ -273,5 +267,6 @@ void main() {
         '   The value of a widget debug variable was changed by the test.\n',
       );
     }
+    debugHighlightDeprecatedWidgets = false;
   });
 }