Cast tenant

Author: fogelito

src/Database/Database.php

@@ -3863,6 +3863,9 @@ public function updateDocument(string $collection, string $id, Document $documen
 
         $document = $this->withTransaction(function () use ($collection, $id, $document) {
             $time = DateTime::now();
+            /**
+             * @var $old Document
+             */
             $old = Authorization::skip(fn () => $this->silent(
                 fn () =>
                 $this->getDocument($collection->getId(), $id, forUpdate: true)
@@ -3873,7 +3876,7 @@ public function updateDocument(string $collection, string $id, Document $documen
             $document['$createdAt'] = $old->getCreatedAt();                 // Make sure user doesn't switch createdAt
 
             if ($this->adapter->getSharedTables()) {
-                $document['$tenant'] = $old->getAttribute('$tenant');       // Make sure user doesn't switch tenant
+                $document['$tenant'] = $old->getTenant();       // Make sure user doesn't switch tenant
             }
 
             $document = new Document($document);