【代码修复】MALL：拼团活动的商品拼接不正确的问题

yudao-module-mall/yudao-module-promotion-biz/src/main/java/cn/iocoder/yudao/module/promotion/convert/combination/CombinationActivityConvert.java

@@ -68,10 +68,11 @@ public interface CombinationActivityConvert {
                                                                       List<ProductSpuRespDTO> spuList) {
         PageResult<CombinationActivityPageItemRespVO> pageResult = convertPage(page);
         Map<Long, ProductSpuRespDTO> spuMap = convertMap(spuList, ProductSpuRespDTO::getId);
+        Map<Long, List<CombinationProductDO>> productMap = convertMultiMap(productList, CombinationProductDO::getActivityId);
         pageResult.getList().forEach(item -> {
             MapUtils.findAndThen(spuMap, item.getSpuId(), spu -> item.setSpuName(spu.getName()).setPicUrl(spu.getPicUrl())
                     .setMarketPrice(spu.getMarketPrice()));
-            item.setProducts(convertList2(productList));
+            item.setProducts(convertList2(productMap.get(item.getId())));
             // 设置统计字段
             item.setGroupCount(groupCountMap.getOrDefault(item.getId(), 0))
                     .setGroupSuccessCount(groupSuccessCountMap.getOrDefault(item.getId(), 0))