fix(RankingCard): 修复查看更多后未重置选中状态的问题

在查看更多操作后延迟500毫秒重置activeTab为默认值'shanghai'，确保UI状态一致性

 <!--
  * @Date: 2025-01-09 00:00:00
  * @LastEditors: hookehuyr hookehuyr@gmail.com
- * @LastEditTime: 2025-10-28 16:58:49
+ * @LastEditTime: 2025-10-29 09:42:53
  * @FilePath: /lls_program/src/components/RankingCard.vue
  * @Description: 排行榜卡片组件
 -->
@@ -445,7 +445,11 @@ const formatSupportSteps = (steps) => {
  */
 const handleViewMore = () => {
   if (props.onViewMore) {
-    props.onViewMore()
+    props.onViewMore();
+    // 恢复默认选中状态
+    setTimeout(() => {
+      activeTab.value = 'shanghai'
+    }, 500);
   }
 }