fix: desktop test runner fails

Author: abose

test/SpecRunner.html

@@ -317,7 +317,7 @@
 
   <script src="../src/phoenix/shell.js" type="module"></script>
   <script src="virtual-server-loader.js" type="module"></script>
-  <script src="../src/node-loader.js"></script>
+  <script src="../src/node-loader.js" defer></script>
   <script src="../src/storage.js" type="module"></script>
 
   <link href="../src/thirdparty/bootstrap/bootstrap.min.css" rel="stylesheet">