用户更新藏品，预估价设置null4

ch-wx-api/src/main/java/com/wwdz/ch/wx/impl/distribution/SupplierItemServiceImpl.java

@@ -820,6 +820,8 @@ public class SupplierItemServiceImpl implements SupplierItemService {
             supplierItem.setRebate(oldItem.getRebate());
             supplierItem.setSupplierId(oldItem.getSupplierId());
             supplierItem.setIsDeleted(oldItem.getIsDeleted());
+            supplierItem.setStatus(oldItem.getStatus());
+            supplierItem.setBuyLimitNum(oldItem.getBuyLimitNum());
             if (StringUtils.hasLength(dto.getVideos())) {
                 supplierItem.setVideos(getVideosImage(dto.getVideos()));
             }