feat(BottomNav): 修改活动标签为"乐在重阳"

 <!--
  * @Date: 2025-08-27 17:44:10
  * @LastEditors: hookehuyr hookehuyr@gmail.com
- * @LastEditTime: 2025-09-20 23:13:52
+ * @LastEditTime: 2025-09-22 15:12:13
  * @FilePath: /map-demo/src/components/BottomNav.vue
  * @Description: 文件描述
 -->
@@ -42,7 +42,7 @@ const isMiniProgramWebView = computed(() => {
 
 const navItems = shallowRef([
   { path: '/pages/Dashboard/index', icon: homeIcon, activeIcon: homeIconActive, label: '首页' },
-  { path: '/pages/ActivitiesCover/index', icon: activitiesIcon, activeIcon: activitiesIconActive, label: '活动' },
+  { path: '/pages/ActivitiesCover/index', icon: activitiesIcon, activeIcon: activitiesIconActive, label: '乐在重阳' },
   // { path: '/pages/RewardCategories/index', icon: rewardsIcon, activeIcon: rewardsIconActive, label: '兑换' },
   // TAG: 暂时写死以后可能会改变
   { path: '/pages/Rewards/index?id=health&category=health', icon: rewardsIcon, activeIcon: rewardsIconActive, label: '兑换' },