Merge branch 'jnnkl-remove-EventListener-project-activity' into 'master'

Remove obsolete DOMContentLoadedEventListener

See merge request gitlab-org/gitlab!52572

app/assets/javascripts/pages/projects/activity/index.js

 import Activities from '~/activities';
 import ShortcutsNavigation from '~/behaviors/shortcuts/shortcuts_navigation';
 
-document.addEventListener('DOMContentLoaded', () => {
-  new Activities(); // eslint-disable-line no-new
-  new ShortcutsNavigation(); // eslint-disable-line no-new
-});
+new Activities(); // eslint-disable-line no-new
+new ShortcutsNavigation(); // eslint-disable-line no-new