Fix JS bundle not running on the Cluster update/destroy pages

Fix https://gitlab.com/gitlab-org/gitlab-ee/issues/4378

Conflicts:
	app/assets/javascripts/dispatcher.js

app/assets/javascripts/dispatcher.js

@@ -559,6 +559,8 @@ import Activities from './activities';
             .catch(fail);
           break;
         case 'projects:clusters:show':
+        case 'projects:clusters:update':
+        case 'projects:clusters:destroy':
           import('./pages/projects/clusters/show')
             .then(callDefault)
             .catch(fail);

changelogs/unreleased-ee/4378-fix-cluster-js-not-running-on-update-page.yml

+---
+title: Fix JavaScript bundle running on Cluster update/destroy pages
+merge_request:
+author:
+type: fixed