Merge branch 'jnnkl-remove-eventlistener-forks-new' into 'master'

Remove obsolete DOMContentLoadedEventListener

See merge request gitlab-org/gitlab!55051

app/assets/javascripts/pages/projects/forks/new/index.js

 import Vue from 'vue';
 import ForkGroupsList from './components/fork_groups_list.vue';
 
-document.addEventListener('DOMContentLoaded', () => {
-  const mountElement = document.getElementById('fork-groups-mount-element');
-
-  const { endpoint } = mountElement.dataset;
-
-  return new Vue({
+const mountElement = document.getElementById('fork-groups-mount-element');
+const { endpoint } = mountElement.dataset;
+// eslint-disable-next-line no-new
+new Vue({
   el: mountElement,
   render(h) {
     return h(ForkGroupsList, {
@@ -15,5 +13,4 @@ document.addEventListener('DOMContentLoaded', () => {
       },
     });
   },
-  });
 });