Remove DOMContentLoaded Eventlistener

ee/app/assets/javascripts/pages/projects/pipelines/index/index.js

 import '~/pages/projects/pipelines/index/index';
 import initVueAlerts from '~/vue_alerts';
 
-document.addEventListener('DOMContentLoaded', initVueAlerts);
+initVueAlerts();

ee/app/assets/javascripts/pages/projects/pipelines/show/index.js

@@ -4,10 +4,8 @@ import initPipelines from '~/pages/projects/pipelines/init_pipelines';
 import initLicenseReport from './license_report';
 import initCodequalityReport from './codequality_report';
 
-document.addEventListener('DOMContentLoaded', () => {
-  initPipelines();
-  initPipelineDetails();
-  initPipelineSecurityDashboard();
-  initLicenseReport();
-  initCodequalityReport();
-});
+initPipelines();
+initPipelineDetails();
+initPipelineSecurityDashboard();
+initLicenseReport();
+initCodequalityReport();

ee/app/assets/javascripts/pages/projects/pipelines/show/security_report.js

 import initPipelineSecurityDashboard from 'ee/security_dashboard/pipeline_init';
 
-document.addEventListener('DOMContentLoaded', initPipelineSecurityDashboard);
+initPipelineSecurityDashboard();