refactor: ♻️ userStore 代码重构优化

Former-commit-id: ef31b8420a48a91dd2449d62fb615941d528bf24

src/layout/components/NavBar/NavRight.vue

@@ -16,7 +16,7 @@
   <!-- 用户头像 -->
   <el-dropdown trigger="click">
     <div class="avatar-container">
-      <img :src="userStore.avatar + '?imageView2/1/w/80/h/80'" />
+      <img :src="userStore.user.avatar + '?imageView2/1/w/80/h/80'" />
       <i-ep-caret-bottom class="w-3 h-3" />
     </div>
     <template #dropdown>