core/txpool/legacypool: reset gauges on clear (ethereum#33654)

Signed-off-by: Csaba Kiraly <csaba.kiraly@gmail.com>
Co-authored-by: rjl493456442 <garyrong0905@gmail.com>

Author: 2 people

core/txpool/legacypool/legacypool.go

@@ -1846,6 +1846,10 @@ func (pool *LegacyPool) Clear() {
 	pool.queue = newQueue(pool.config, pool.signer)
 	pool.pendingNonces = newNoncer(pool.currentState)
 
+	// Reset gauges
+	pendingGauge.Update(0)
+	queuedGauge.Update(0)
+	slotsGauge.Update(0)
 	pendingAddrsGauge.Update(0)
 	queuedAddrsGauge.Update(0)
 }