core/txpool: use right type for field Txs in NewTxsEvent (#1897)

This commit updates the Txs field in NewTxsEvent to use []*types.Transaction instead of types.Transactions. This ensures type consistency for event broadcasting and handling, improving reliability of transaction propagation across the network. The change also removes unnecessary goroutine usage for txFeed.Send, making event delivery synchronous and safer for downstream consumers.

Author: gzliudan

core/txpool/txpool.go

@@ -971,7 +971,7 @@ func (pool *TxPool) promoteSpecialTx(addr common.Address, tx *types.Transaction,
 	// Set the potentially new pending nonce and notify any subsystems of the new tx
 	pool.beats[addr] = time.Now()
 	pool.pendingNonces.set(addr, tx.Nonce()+1)
-	go pool.txFeed.Send(core.NewTxsEvent{Txs: types.Transactions{tx}})
+	pool.txFeed.Send(core.NewTxsEvent{Txs: []*types.Transaction{tx}})
 	return true, nil
 }