Merge branch 'jnnkl-remove-eventlistener-integrations-edit' into 'master'

Remove obsolete DOMContentLoadedEventListener

See merge request gitlab-org/gitlab!55621

app/assets/javascripts/pages/groups/settings/integrations/edit/index.js

 import IntegrationSettingsForm from '~/integrations/integration_settings_form';
 import PrometheusMetrics from '~/prometheus_metrics/prometheus_metrics';
 
-document.addEventListener('DOMContentLoaded', () => {
-  const prometheusSettingsWrapper = document.querySelector('.js-prometheus-metrics-monitoring');
-  const integrationSettingsForm = new IntegrationSettingsForm('.js-integration-settings-form');
-  integrationSettingsForm.init();
+const prometheusSettingsWrapper = document.querySelector('.js-prometheus-metrics-monitoring');
+const integrationSettingsForm = new IntegrationSettingsForm('.js-integration-settings-form');
+integrationSettingsForm.init();
 
-  if (prometheusSettingsWrapper) {
+if (prometheusSettingsWrapper) {
   const prometheusMetrics = new PrometheusMetrics('.js-prometheus-metrics-monitoring');
   prometheusMetrics.loadActiveMetrics();
-  }
-});
+}