perf: 优化管理端生产加载体验

- 图标与重型组件按需加载，优化菜单预取和页面请求链路

- 开启 gzip 与静态缓存并修复子路由 KeepAlive 冲突

easyflow-ui-admin/app/src/preferences.ts

@@ -25,7 +25,7 @@ export const overridesPreferences = defineOverridesPreferences({
   transition: {
     enable: false,
     loading: false,
-    progress: false,
+    progress: true,
   },
 });