update vite/plugins/unocss.ts.

因低浏览器不支持 top-level await，会报 __uno.css:9 Uncaught SyntaxError: Unexpected reserved word

hmrTopLevelAwait
unocss默认是true，低版本浏览器是不支持启动后会报错

Signed-off-by: running0503 <xiangdeshan_120@sina.com>

vite/plugins/unocss.ts

@@ -8,6 +8,7 @@ export default () => {
     shortcuts: {
       'panel-title':
         'pb-[5px] font-sans leading-[1.1] font-medium text-base text-[#6379bb] border-b border-b-solid border-[var(--el-border-color-light)] mb-5 mt-0'
-    }
+    },
+    hmrTopLevelAwait: false, // unocss默认是true，低版本浏览器是不支持的，启动后会报错
   });
 };