Remove LSP base from Xaml content type definition to avoid regressing rps

src/VisualStudio/Xaml/Impl/XamlStaticTypeDefinitions.cs

@@ -15,7 +15,7 @@ public static class XamlStaticTypeDefinitions
         /// </summary>
         [Export]
         [Name(ContentTypeNames.XamlContentType)]
-        [BaseDefinition(CodeRemoteContentDefinition.CodeRemoteContentTypeName)]
+        [BaseDefinition("code")]
         internal static readonly ContentTypeDefinition XamlContentType;
 
         // Associate .xaml as the Xaml content type.