Fixed Unity's built-in property drawer not being recognized by GenericPropertyDrawer

Author: DanielEverland

Assets/SO Architecture/Editor/SOArchitecture_EditorUtility.cs

@@ -100,6 +100,9 @@ public static bool SupportsMultiLine(Type type)
         }
         public static bool HasPropertyDrawer(Type type)
         {
+            if (HasBuiltinPropertyDrawer(type))
+                return true;
+
             if (_propertyDrawerGraph == null)
                 CreatePropertyDrawerGraph();