fix: 环境未配置地图图层方案造成的错误问题

src/pages/user/login/login.js

@@ -411,7 +411,7 @@ class Login {
     const { layers = [] } = this.globalConfig.mapsettings || {};
     if (layers.length === 0) {
       widgetIndex !== -1 && this.globalConfig.uiwidgets.splice(widgetIndex, 1);
-      return Promise.resolve({});
+      return Promise.resolve(this.globalConfig.mapsettings);
     }
 
     const layer = layers[0];