Remove non callable array items from field categories (#20093)

* Update default.php

* Update fields.php

* Update default.php

* Update fields.php

* Update fields.php

* Update fields.php

administrator/components/com_fields/helpers/fields.php

@@ -657,7 +657,7 @@ public static function getAssignedCategoriesTitles($fieldId)
 
 		$query->select($db->quoteName('c.title'))
 			->from($db->quoteName('#__fields_categories', 'a'))
-			->join('LEFT', $db->quoteName('#__categories', 'c') . ' ON a.category_id = c.id')
+			->join('INNER', $db->quoteName('#__categories', 'c') . ' ON a.category_id = c.id')
 			->where('field_id = ' . $fieldId);
 
 		$db->setQuery($query);