Merge pull request #9 from Loren-Wang/dev/groupMessage

修复dev编译问题

src/gallery/classroom/hx-chat/fcr-chatroom/store/user.ts

@@ -27,7 +27,9 @@ export class UserStore {
   private _raiseHandTooltipTask: Scheduler.Task | null = null;
 
   constructor(private _widget: AgoraHXChatWidget, private _fcrChatRoom: AgoraIMBase) {
-    this._privateUser = this._fcrChatRoom.getPrivateUser()
+    runInAction(()=>{
+      this._privateUser = this._fcrChatRoom.getPrivateUser()
+    })
     this._addEventListeners();
     this._onUserJoined = this._onUserJoined.bind(this);
     this._initUserMuted();