Issue #3258056: Simplify Stage::dispatch exception handling

package_manager/src/Stage.php

@@ -342,7 +342,6 @@ class Stage {
       $this->eventDispatcher->dispatch($event);
     }
     catch (\Throwable $error) {
-      // @todo Simplify exception handling in https://www.drupal.org/i/3258056.
       // If we are not going to be able to create the staging area, mark it as
       // available.
       // @see ::create()