Model Update ignores null

If everything works with the array, then it will work with the entity.

PHP Code:

class Model extends \CodeIgniter\Model
{
    protected $table = 'table';
    protected $allowedFields = ['customer_deleted', 'customer_deleted_at'];
}
class Entity extends \CodeIgniter\Entity\Entity {}


$e = new Entity();
$e->customer_deleted = null;
$e->customer_deleted_at = date('Y-m-d H:i:s');

(new Model)->update(1, $e);
// UPDATE `table` SET `customer_deleted` = NULL, `customer_deleted_at` = '2021-12-29 16:59:19' WHERE `table`.`id` IN (1)