Introducee doesn't receive second introduction request
Steps to reproduce:
- Add devices A and B as contacts
- Add devices B and C as contacts
- B offers to introduce A and C
- A accepts the introduction
- C declines the introduction
- B offers to introduce A and C again
- Expected: A and C receive B's new introduction request
- Actual: B's new introduction request appears in the conversation with C, but not the conversation with A. After turning C's screen off and on, the accept and decline buttons disappear from B's new introduction request (this might be a separate bug, or might indicate that the request can no longer be answered because the session has been aborted)
- B can still exchange private messages with A and C, so it's not a connection issue