fix: 优化场景加载逻辑，处理空场景和非字符串地图输入，确保菜单配置正确显示

src/services/context-menu/menu-config.service.ts

@@ -117,6 +117,12 @@ function processContextMenu(
   // 获取菜单配置
   const menuConfig = getMenuConfig(parsedData.type, parsedData, services);
 
+  // 如果菜单类型为 'default'，则不显示菜单
+  if (menuConfig.menuType === 'default') {
+    manager.close(); // 确保菜单已关闭
+    return;
+  }
+
   // 更新状态
   manager.setState({
     visible: true,

src/services/editor.service.ts

@@ -80,7 +80,7 @@ export class EditorService extends Meta2d {
     detail?: Partial<GroupSceneDetail>,
     isImport = false,
   ): Promise<void> {
-    const scene: StandardScene = map ? JSON.parse(map) : {};
+    const scene: StandardScene = (isString(map) ? (map ? JSON.parse(map) : {}) : map) || {};
     if (!isEmpty(detail?.group)) {
       scene.robotGroups = [detail.group];
       scene.robots = detail.robots;