test: Add 8 people voice tests

toju-app/src/app/infrastructure/realtime/state/webrtc-state-controller.ts

@@ -120,6 +120,16 @@ export class WebRtcStateController {
     this._isNoiseReductionEnabled.set(enabled);
   }
 
+  setConnectionError(message: string | null): void {
+    this._hasConnectionError.set(!!message);
+    this._connectionErrorMessage.set(message);
+  }
+
+  clearConnectionError(): void {
+    this._hasConnectionError.set(false);
+    this._connectionErrorMessage.set(null);
+  }
+
   setConnectedPeers(peers: string[]): void {
     this._connectedPeers.set(peers);
   }