TransactionReceipt function needs to wait for a certain number of block confirmations

[Ravenyjh]

something like that

 receipt, err := client.TransactionReceipt(ctx, txHash)
       if err == ethereum.NotFound {
           log.Println("Transaction not found yet. Retrying...")
           time.Sleep(pollingInterval)
           continue
       } else if err != nil {
           log.Fatalf("Failed to get transaction receipt: %v", err)
       }

       // 获取最新的区块号
       header, err := client.HeaderByNumber(ctx, nil)
       if err != nil {
           log.Fatalf("Failed to get latest block: %v", err)
       }

       // 计算确认数量
       confirmations := new(big.Int).Sub(header.Number, receipt.BlockNumber).Uint64()
       if confirmations >= confirmationsRequired {
           fmt.Printf("Transaction has been confirmed with %d confirmations.\n", confirmations)
           break
       } else {
           fmt.Printf("Transaction has %d confirmations; waiting for %d more confirmations...\n", confirmations, confirmationsRequired-confirmations)
           time.Sleep(pollingInterval)
       }
       ```