core: more detailed metering for reorgs (#21420)

core/tx_pool.go

@@ -1422,6 +1422,8 @@ func (pool *TxPool) demoteUnexecutables() {
 				pool.enqueueTx(hash, tx)
 			}
 			pendingGauge.Dec(int64(len(gapped)))
+			// This might happen in a reorg, so log it to the metering
+			blockReorgInvalidatedTx.Mark(int64(len(gapped)))
 		}
 		// Delete the entire pending entry if it became empty.
 		if list.Empty() {