[lib] fix sending retried message twice

Summary:
ENG-9279.

This was rebase issue from D13327.

Depends on D13327

Test Plan:

1. Open apps on devices A, B and C.
2. On A, add test code that will throw test error when sending message to device C.
3. On A create a thread with B and C, and send message (message in UI visible as failed, not visible on C, visible on B).
4. Remove testing code and hit retry button.
5. Sent status on A, visible on C, not visible twice on B.

Reviewers: tomek

Reviewed By: tomek

Subscribers: ashoat

Differential Revision: https://phab.comm.dev/D13352