Merge branch 'jnnkl-eventlistener-merge-request-new' into 'master'

Remove obsolete DOMContentLoadedEventListener

See merge request gitlab-org/gitlab!53867

app/assets/javascripts/pages/projects/merge_requests/creations/index.js

 import initMergeRequest from '~/pages/projects/merge_requests/init_merge_request';
 
-document.addEventListener('DOMContentLoaded', initMergeRequest);
+initMergeRequest();

app/assets/javascripts/pages/projects/merge_requests/creations/new/index.js

@@ -2,16 +2,14 @@ import initPipelines from '~/commit/pipelines/pipelines_bundle';
 import MergeRequest from '~/merge_request';
 import initCompare from './compare';
 
-document.addEventListener('DOMContentLoaded', () => {
-  const mrNewCompareNode = document.querySelector('.js-merge-request-new-compare');
-  if (mrNewCompareNode) {
+const mrNewCompareNode = document.querySelector('.js-merge-request-new-compare');
+if (mrNewCompareNode) {
   initCompare(mrNewCompareNode);
-  } else {
+} else {
   const mrNewSubmitNode = document.querySelector('.js-merge-request-new-submit');
   // eslint-disable-next-line no-new
   new MergeRequest({
     action: mrNewSubmitNode.dataset.mrSubmitAction,
   });
   initPipelines();
-  }
-});
+}