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

Remove obsolete DOMContentLoadedEventListener

See merge request gitlab-org/gitlab!55618

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

 import initBlobBundle from '~/blob_edit/blob_bundle';
 
-document.addEventListener('DOMContentLoaded', initBlobBundle);
+initBlobBundle();