multi: start consumers with a starting blockbeat

This is needed so the consumers have an initial state about the current
block.

sweep/fee_bumper.go

@@ -795,13 +795,16 @@ type monitorRecord struct {
 
 // Start starts the publisher by subscribing to block epoch updates and kicking
 // off the monitor loop.
-func (t *TxPublisher) Start() error {
+func (t *TxPublisher) Start(beat chainio.Blockbeat) error {
 	log.Info("TxPublisher starting...")
 
 	if t.started.Swap(true) {
 		return fmt.Errorf("TxPublisher started more than once")
 	}
 
+	// Set the current height.
+	t.currentHeight.Store(beat.Height())
+
 	t.wg.Add(1)
 	go t.monitor()