fix(HomePage): 修复监听activeTab变化时内容区域位置重置问题

在监听activeTab变化时，使用nextTick确保DOM更新后再执行滚动操作，以避免潜在的布局计算错误

 <!--
  * @Date: 2025-03-20 19:55:21
  * @LastEditors: hookehuyr hookehuyr@gmail.com
- * @LastEditTime: 2025-03-25 17:48:53
+ * @LastEditTime: 2025-03-25 17:52:17
  * @FilePath: /mlaj/src/views/HomePage.vue
  * @Description: 亲子学院首页组件
  *
@@ -679,13 +679,15 @@ const contentRef = ref(null) // 内容区域的ref引用
 
 // 监听activeTab变化，重置内容区域位置
 watch(activeTab, () => {
-  if (contentRef.value) {
-    const navHeight = document.querySelector('.sticky').offsetHeight;
-    const marginTop = parseInt(window.getComputedStyle(contentRef.value).marginTop);
-    window.scrollTo({
-      top: contentRef.value.offsetTop - navHeight - marginTop,
-      behavior: 'smooth'
-    });
-  }
+  nextTick(() => {
+    if (contentRef.value) {
+      const navHeight = document.querySelector('.sticky').offsetHeight;
+      const marginTop = parseInt(window.getComputedStyle(contentRef.value).marginTop);
+      window.scrollTo({
+        top: contentRef.value.offsetTop - navHeight - marginTop,
+        behavior:'smooth'
+      });
+    }
+  })
 })
 </script>