feat:调解推荐服务mid为null传空串

recommend-server-service/src/main/java/com/tzld/piaoquan/recommend/server/service/rank/strategy/RankStrategy4RegionMergeModelV569.java

@@ -251,7 +251,7 @@ public class RankStrategy4RegionMergeModelV569 extends RankStrategy4RegionMergeM
             }
 
             // 将空的特征表过滤
-            video.getMetaFeatureMap().entrySet().removeIf(e -> MapUtils.isNotEmpty(e.getValue()));
+            video.getMetaFeatureMap().entrySet().removeIf(e -> MapUtils.isEmpty(e.getValue()));
 
             result.add(video);
         }