feat(cli): support custom simulator (#8499)

packages/vant-cli/site/common/iframe-router.js

@@ -2,6 +2,8 @@
  * 同步父窗口和 iframe 的 vue-router 状态
  */
 
+import { config } from 'site-desktop-shared';
+
 let queue = [];
 let isIframeReady = false;
 
@@ -27,7 +29,12 @@ if (window.top === window) {
 
 function getCurrentDir() {
   const router = window.vueRouter;
-  return router.currentRoute.value.path;
+  const { path } = router.currentRoute.value;
+
+  if (config.site.simulator?.routeMapper) {
+    return config.site.simulator?.routeMapper(path);
+  }
+  return path;
 }
 
 export function syncPathToParent() {