Merge branch 'jnnkl-remove-eventlistener-dashboard-todos-page' into 'master'

Remove obsolete DOMContentLoadedEventListener

See merge request gitlab-org/gitlab!56371

app/assets/javascripts/pages/dashboard/todos/index/index.js

 import Todos from './todos';
 
-document.addEventListener('DOMContentLoaded', () => new Todos());
+new Todos(); // eslint-disable-line no-new