message: Update the Highway tests.
diff: @@ -85,13 +85,12 @@ where
  0,
  start_timestamp,
  );
  - // We expect four messages:
  + // We expect three messages:
  // * log participation timer,
  // * log synchronizer queue length timer,
  - // * purge synchronizer queue timer,
  - // * latest state request timer
  + // * purge synchronizer queue timer
  // If there are more, the tests might need to handle them.
  - assert_eq!(4, outcomes.len());
  + assert_eq!(3, outcomes.len());
  hw_proto
  }
  @@ -211,7 +210,9 @@ fn send_a_valid_wire_unit() {
  let mut outcomes = highway_protocol.handle_message(&mut rng, sender, msg, now);
  while let Some(outcome) = outcomes.pop() {
  match outcome {
  - ProtocolOutcome::CreatedGossipMessage(_) | ProtocolOutcome::FinalizedBlock(_) => (),
  + ProtocolOutcome::CreatedGossipMessage(_)
  + | ProtocolOutcome::FinalizedBlock(_)
  + | ProtocolOutcome::HandledProposedBlock(_) => (),
  ProtocolOutcome::QueueAction(ACTION_ID_VERTEX) => {
  outcomes.extend(highway_protocol.handle_action(ACTION_ID_VERTEX, now))
  }
  