When switching nodes, the relay repeats packets in its queue that have been already sent by a previous node

[jeremiah-k]

I found this bug when switching between my tlora (connected via serial & network) and my rooftop rak (connected via ble). If I connect the relay to my tlora and use the relay as I do normally, then change nodes and connect to the rooftop rak, the rak will have stored packets in its queue that it will then send to the mapped matrix channels as diplicates.

I do like that it sends packets that it received while disconnected (for example, as a result of a temporary network issue), but we need to check the Matrix room to see if the same packets have been sent previously, either by itself or by another node.