fix:修复监控localStorage缓存lgn错误问题

@@ -285,7 +285,7 @@
                             let d = res.data;
                             localStorage.setItem("mj-user-info",JSON.stringify(d))
                             if(d.user){
-                                localStorage.setItem("lgn", d.user.id);
+                                localStorage.setItem("lgn", d.user.username);
                                 session.putUser(d.user.username);
                             }