!1055 【BUG】修改限时折扣更新时没有设置活动开始时间点和活动结束时间点的问题

Merge pull request !1055 from 痴货/develop

yudao-module-mall/yudao-module-promotion-biz/src/main/java/cn/iocoder/yudao/module/promotion/service/discount/DiscountActivityServiceImpl.java

@@ -104,7 +104,10 @@ public class DiscountActivityServiceImpl implements DiscountActivityService {
         }
         // 计算新增的记录
         List<DiscountProductDO> newDiscountProducts = convertList(updateReqVO.getProducts(),
-                product -> DiscountActivityConvert.INSTANCE.convert(product).setActivityId(updateReqVO.getId()));
+                product -> DiscountActivityConvert.INSTANCE.convert(product)
+                        .setActivityId(updateReqVO.getId())
+                        .setActivityStartTime(updateReqVO.getStartTime())
+                        .setActivityEndTime(updateReqVO.getEndTime()));
         newDiscountProducts.removeIf(product -> dbDiscountProducts.stream().anyMatch(
                 dbProduct -> DiscountActivityConvert.INSTANCE.isEquals(dbProduct, product))); // 如果匹配到，说明是更新的
         if (CollectionUtil.isNotEmpty(newDiscountProducts)) {