Revert "sec: deprecate some webPreference defaults to be secure-by-default (#14284)" (#14380)

This reverts commit 66d6ba8689.

default_app/index.html

@@ -83,6 +83,8 @@
       </div>
     </div>
   </nav>
+
+  <script src="./renderer.js"></script>
 </body>
 
 </html>