Swarm: Compat with old client is broken for incoming invitations
- Client with stack swarm creates account A. Old client (without swarm) creates account B.
- B sends invitation request to A.
- A accepts invitation. Problems:
- B does not appear on the contact list until account/tab switch.
- Conversation with B is empty.
- Incoming call from B gives "ConversationModelPimpl::slotIncomingCall, but conversation not found"
- A tries to send messages -> B sees the composing status correctly but does not receive the messages.
- When client-qt is closed and relaunched on A, contact B does not appear anymore on the smartlist.