feat: 添加购物车修改

src/main/java/com/chaozhanggui/system/cashierservice/service/OrderService.java

@@ -458,6 +458,7 @@ public class OrderService {
                     return Result.success(CodeEnum.SUCCESS, masterId);
                 }
 
+                number = cashierCart.getNumber().add(number);
                 cashierCart.setNumber(number);
                 if (product != null) {
                     resetGroupProductCart(groupProductIdList, product, cashierCart);