PointSaleStore : filter y merchant optionnal

Repository/PointSale/PointSaleStore.php

@@ -25,7 +25,7 @@ class PointSaleStore extends AbstractStore
 
     public function filtersDefault(RepositoryQueryInterface $query): RepositoryQueryInterface
     {
-        $query->filterByMerchant($this->merchant);
+        $this->addFilterByMerchantOptionnal($query);
         return $query;
     }