fix(template) add notification when delete (#6675)

app/kubernetes/custom-templates/kube-custom-templates-view/kube-custom-templates-view.controller.js

@@ -61,7 +61,9 @@ export default class KubeCustomTemplatesViewController {
       }
 
       try {
+        var template = _.find(this.templates, { Id: templateId });
         await this.CustomTemplateService.remove(templateId);
+        this.Notifications.success('Template successfully deleted', template && template.Title);
         _.remove(this.templates, { Id: templateId });
       } catch (err) {
         this.Notifications.error('Failure', err, 'Failed to delete template');

app/portainer/views/custom-templates/custom-templates-view/customTemplatesViewController.js

@@ -213,7 +213,9 @@ class CustomTemplatesViewController {
     }
 
     try {
+      var template = _.find(this.templates, { Id: templateId });
       await this.CustomTemplateService.remove(templateId);
+      this.Notifications.success('Template successfully deleted', template && template.Title);
       _.remove(this.templates, { Id: templateId });
     } catch (err) {
       this.Notifications.error('Failure', err, 'Failed to delete template');