Merge branch 'jnnkl-eventlistener-releases-new' into 'master'

Remove obsolete DOMContentLoadedEventListener

See merge request gitlab-org/gitlab!53849

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

 import ZenMode from '~/zen_mode';
 import initNewRelease from '~/releases/mount_new';
 
-document.addEventListener('DOMContentLoaded', () => {
-  new ZenMode(); // eslint-disable-line no-new
-  initNewRelease();
-});
+new ZenMode(); // eslint-disable-line no-new
+initNewRelease();