fix(index.html): change env-config.js script type for compatibility

- Updated the script tag for env-config.js in index.html to remove the type="module" attribute, ensuring better compatibility with existing code.

worklenz-frontend/index.html

@@ -13,7 +13,7 @@
     />
     <title>Worklenz</title>
     <!-- Environment configuration -->
-    <script type="module" src="/env-config.js"></script>
+    <script src="/env-config.js"></script>
     <!-- Unregister service worker -->
     <script src="/unregister-sw.js"></script>
   </head>