Fix FancyZones tools build (#24901)

* Fix FancyZones Hit test build

* Fix DrawLayoutTest

* Fix Zonable tester

* Adress PR comments

tools/FancyZone_HitTest/FancyZone_HitTest/App.xaml.cs

@@ -1,4 +1,8 @@
-using System;
+// Copyright (c) Microsoft Corporation
+// The Microsoft Corporation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+using System;
 using System.Collections.Generic;
 using System.Configuration;
 using System.Data;