[chronik] Bind the transaction invalidated callback to the ws messages
Summary:
Similar to D18432 but for the invalidation event.
Depends on D18438.
Test Plan:
ninja all check-all
Reviewers: #bitcoin_abc, tobias_ruck
Reviewed By: #bitcoin_abc, tobias_ruck
Subscribers: tobias_ruck
Differential Revision: https://reviews.bitcoinabc.org/D18441