perf: 优化代码

src/layout/components/sidebar/mixNav.vue

@@ -1,7 +1,6 @@
 <script setup lang="ts">
 import Search from "../search/index.vue";
 import Notice from "../notice/index.vue";
-import avatars from "@/assets/avatars.jpg";
 import { useNav } from "@/layout/hooks/useNav";
 import { transformI18n } from "@/plugins/i18n";
 import { ref, toRaw, watch, onMounted, nextTick } from "vue";
@@ -129,7 +128,10 @@ watch(
       <!-- 退出登录 -->
       <el-dropdown trigger="click">
         <span class="el-dropdown-link navbar-bg-hover select-none">
-          <img v-if="avatars" :src="avatars" :style="avatarsStyle" />
+          <img
+            src="https://avatars.githubusercontent.com/u/44761321?v=4"
+            :style="avatarsStyle"
+          />
           <p v-if="username" class="dark:text-white">{{ username }}</p>
         </span>
         <template #dropdown>