fix: uat>导航换肤，新闻频道列表页，卡片之间不应展示背景图

@@ -174,7 +174,15 @@ export struct TopNavigationComponentNew {
       autoRefresh: this.autoRefresh2Page,
       autoRefresh: this.autoRefresh2Page,
       isMourning: mourningCheckFn(`${navItem.channelId}`),
       isMourning: mourningCheckFn(`${navItem.channelId}`),
     })
     })
-      .backgroundColor(CompUtils.isRMH(this.navItem)?Color.White:Color.Transparent)
+      .margin({
+        left: 6,
+        right: 6
+      })
+      .borderRadius({
+        topLeft: 6,
+        topRight: 6
+      })
+      .backgroundColor(CompUtils.isRMH(this.navItem) || CompUtils.isNews(this.navItem) ? Color.White : Color.Transparent)
   }
   }
 
 
   /**
   /**