feat: 🎨 解决关于 page 是否存在判断不合理的问题

Variable 'page' is null checked here, but its property is accessed without null check prior at line 160 .

src/layout/header-aside/components/tabs/index.vue

@@ -157,8 +157,10 @@ export default {
     handleClick (tab, event) {
       // 找到点击的页面在 tag 列表里是哪个
       const page = this.opened.find(page => page.fullPath === tab.name)
+      if (page) {
         const { name, params, query } = page
-      if (page) this.$router.push({ name, params, query })
+        this.$router.push({ name, params, query })
+      }
     },
     /**
      * @description 点击 tab 上的删除按钮触发这里