fix: Telepathy fix a bug where calling Disconnect while connecting to…

… a dead end would freeze Unity because .Join would wait forever. Interrupt fixes it.

Assets/Mirror/Runtime/Transport/Telepathy/Client.cs

@@ -156,7 +156,13 @@ public void Disconnect()
 
                 // wait until thread finished. this is the only way to guarantee
                 // that we can call Connect() again immediately after Disconnect
-                receiveThread?.Join();
+                // -> calling .Join would sometimes wait forever, e.g. when
+                //    calling Disconnect while trying to connect to a dead end
+                receiveThread?.Interrupt();
+
+                // we interrupted the receive Thread, so we can't guarantee that
+                // connecting was reset. let's do it manually.
+                _Connecting = false;
 
                 // clear send queues. no need to hold on to them.
                 // (unlike receiveQueue, which is still needed to process the