1. Apply this patch: https://gist.github.com/marcinwasowicz/8bdc755abad8ecf81f3bd01c6ca34376
2. Send notification from web to iOS device.
3. Ensure that each notification results in two identical notification being displayed. One is from the keyserver. The other is from tunnelbroker and is E2EE encrypted.
4. I also added some logs in `NotificationsCryptoModule` so that it is logged whether we create new session or use existing one. I only saw the first type of log once.