Issue #3196619 by Shashwat Purav, larowlan, paulocs, Elin Yordanov: Typo in the machine name for Container field in ForumController::addForum

(cherry picked from commit 3cb6f37cc1)

core/modules/forum/src/Controller/ForumController.php

@@ -255,7 +255,6 @@ class ForumController extends ControllerBase {
     $vid = $this->config('forum.settings')->get('vocabulary');
     $taxonomy_term = $this->termStorage->create([
       'vid' => $vid,
-      'forum_controller' => 0,
     ]);
     return $this->entityFormBuilder()->getForm($taxonomy_term, 'forum');
   }