Add back the EXT_Key attribute (which (no longer needed original escaping)

Author: bclothier

Rubberduck.Resources/Templates.Designer.cs

@@ -129,6 +129,8 @@ Attribute VB_GlobalNameSpace = False
 Attribute VB_Creatable = False
 Attribute VB_PredeclaredId = True
 Attribute VB_Exposed = False
+Attribute VB_Ext_KEY = "Rubberduck", "Predeclared Class Module"
+
 Option Explicit</value>
   </data>
   <data name="PredeclaredClassModule_Description" xml:space="preserve">