refactor(mall): 修改客服消息查询排序字段

- 将查询列表时的排序字段从 create_time 改为 update_time
-

yudao-module-mall/yudao-module-promotion-biz/src/main/java/cn/iocoder/yudao/module/promotion/dal/mysql/kefu/KeFuMessageMapper.java

@@ -31,7 +31,7 @@ public interface KeFuMessageMapper extends BaseMapperX<KeFuMessageDO> {
         return selectList(new QueryWrapperX<KeFuMessageDO>()
                 .eqIfPresent("conversation_id", reqVO.getConversationId())
                 .ltIfPresent("create_time", reqVO.getCreateTime())
-                .orderByDesc("create_time")
+                .orderByDesc("update_time")
                 .limitN(reqVO.getLimit()));
     }