test: fix broken dm test

toju-app/src/app/infrastructure/realtime/peer-connection-manager/messaging/data-channel.ts

@@ -29,7 +29,7 @@ export function setupDataChannel(
   channel: RTCDataChannel,
   remotePeerId: string
 ): void {
-  const { logger } = context;
+  const { logger, state } = context;
 
   channel.onopen = () => {
     logger.info('[data-channel] Data channel open', {
@@ -40,6 +40,8 @@ export function setupDataChannel(
       protocol: channel.protocol || null
     });
 
+    state.peerConnected$.next(remotePeerId);
+
     sendCurrentStatesToChannel(context, channel, remotePeerId);
 
     try {