Check content permissions before performing action (#15043)

* Setting actionContext.Result when authz wasn't successful

* Taking into account permissions when it is a new node

* Cleanup

* Passing nodeId as path when new item

src/Umbraco.Web.BackOffice/Controllers/ContentControllerBase.cs

@@ -79,7 +79,6 @@ public abstract class ContentControllerBase : BackOfficeNotificationsController
         ModelState.AddModelError("id", $"content with id: {id} was not found");
         NotFoundObjectResult errorResponse = NotFound(ModelState);
 
-
         return errorResponse;
     }