Do an ICE Restart if WebRTC become disconnected (#3341)

* Do an ice restart if ICE disconnected

  - Waite two seconds after disconnected
  - Remove check for finish ICE gathering and try to add each local candidate. Avoid race in multible ICE gathering

* Add tests for failed iceConnectionState

* suppress type check in unit test

* fix pr issues

spec/test-utils/webrtc.ts

@@ -239,6 +239,8 @@ export class MockRTCPeerConnection {
     public triggerIncomingDataChannel(): void {
         this.onDataChannelListener?.({ channel: {} } as RTCDataChannelEvent);
     }
+
+    public restartIce(): void {}
 }
 
 export class MockRTCRtpSender {