Readded empty bundle file

ee/app/assets/javascripts/logs/logs_bundle.js

+export default () => {};

ee/app/assets/javascripts/pages/projects/environments/logs/index.js

+import logsBundle from 'ee/logs/logs_bundle';
 import KubernetesLogs from '../../../../kubernetes_logs';
 
 if (gon.features.environmentLogsUseVueUi) {
-  document.addEventListener('DOMContentLoaded', () => {});
+  document.addEventListener('DOMContentLoaded', logsBundle);
 } else {
   document.addEventListener('DOMContentLoaded', () => {
     const kubernetesLogContainer = document.querySelector('.js-kubernetes-logs');