Colyseus: Calling `broadcast()` during `onJoin()` is ignoring the new client

[endel]

Reported by @damian-pastorini

[damian-pastorini]

I would say is ignoring the current client so:

```
onJoin(()=>{
this.broadcast // will never reach this client
}

[finkton1]

Any update on status of this bug?

[endel]

@finkton1 a workaround, for now, is to also call this.send(client, /* data */) along with this.broadcast() to include the joining client to receive that message, I'm going to post an update here when this gets fixed