Revert "Editor: updated es-module-shims@1.6.3 (#25457)" (#25458)

This reverts commit cd3520bd0a3767ed91add90468cf3b265f89a40d.

editor/index.html

@@ -47,7 +47,7 @@
 
 		<!-- Import maps polyfill -->
 		<!-- Remove this when import maps will be widely supported -->
-		<script async src="https://unpkg.com/es-module-shims@1.6.3/dist/es-module-shims.js"></script>
+		<script async src="js/libs/es-module-shims.js"></script>
 
 		<script type="importmap">
 			{