Remove DOMContentLoaded EventListener

ee/app/assets/javascripts/pages/security/dashboard/show/index.js

 import initSecurityCharts from 'ee/security_dashboard/security_charts_init';
 import { DASHBOARD_TYPES } from 'ee/security_dashboard/store/constants';
 
-document.addEventListener('DOMContentLoaded', () => {
-  initSecurityCharts(document.getElementById('js-security'), DASHBOARD_TYPES.INSTANCE);
-});
+initSecurityCharts(document.getElementById('js-security'), DASHBOARD_TYPES.INSTANCE);

ee/changelogs/unreleased/defer-optimization-for-security-dashboard-show.yml

+---
+title: Removed DOMContentLoaded Eventlistener from ee/app/assets/javascripts/pages/security/dashboard/show/index.js
+merge_request: 47515
+author:
+type: changed