fix(files_trashbin): create folder if missing when expiring

Signed-off-by: invario <67800603+invario@users.noreply.github.com>

Author: invario

apps/files_trashbin/lib/BackgroundJob/ExpireTrash.php

@@ -90,7 +90,7 @@ private function getTrashRoot(IUser $user): Folder {
 		$this->setupManager->tearDown();
 		$this->setupManager->setupForUser($user);
 
-		$folder = $this->rootFolder->getUserFolder($user->getUID())->getParent()->get('files_trashbin');
+		$folder = $this->rootFolder->getUserFolder($user->getUID())->getParent()->getOrCreateFolder('files_trashbin');
 		if (!$folder instanceof Folder) {
 			throw new \LogicException("Didn't expect files_trashbin to be a file instead of a folder");
 		}