fix: prepend entrypoints instead od append

this resolves an issue with module federation

re webpack#2692

Author: ScriptedAlchemy

lib/utils/addEntries.js

@@ -84,8 +84,8 @@ function addEntries(config, options, server) {
       // in this case, entry is a string or an array.
       // make sure that we do not add duplicates.
       /** @type {Entry} */
-      const entriesClone = additionalEntries.slice(0);
-      [].concat(originalEntry).forEach((newEntry) => {
+      const entriesClone = [].concat(originalEntry);
+      additionalEntries.forEach((newEntry) => {
         if (!entriesClone.includes(newEntry)) {
           entriesClone.push(newEntry);
         }