fix: 提升管理端启动与导航稳定性

- 等待初始路由就绪并提供可恢复的启动失败页面

- 收敛失效登录导航并按需加载 SVG 图标资源

easyflow-ui-admin/packages/icons/package.json

@@ -7,6 +7,10 @@
     ".": {
       "types": "./src/index.ts",
       "default": "./src/index.ts"
+    },
+    "./svg": {
+      "types": "./src/svg/index.ts",
+      "default": "./src/svg/index.ts"
     }
   },
   "dependencies": {

easyflow-ui-admin/packages/icons/src/index.ts

@@ -1,3 +1,2 @@
 export * from './iconify';
 export { default as EmptyIcon } from './icons/empty-icon.vue';
-export * from './svg';