core/types: add EffectiveGasPrice in Receipt (#26713)

This change adds a struct field EffectiveGasPrice in types.Receipt. The field is present
in RPC responses, but not in the Go struct, and thus can't easily be accessed via ethclient.

Co-authored-by: PulsarAI <dev@pulsar-systems.fi>

internal/ethapi/api.go

@@ -1621,6 +1621,7 @@ func (s *TransactionAPI) GetTransactionReceipt(ctx context.Context, hash common.
 		// as per specification.
 		return nil, nil
 	}
+
 	receipts, err := s.b.GetReceipts(ctx, blockHash)
 	if err != nil {
 		return nil, err
@@ -1648,18 +1649,9 @@ func (s *TransactionAPI) GetTransactionReceipt(ctx context.Context, hash common.
 		"logs":              receipt.Logs,
 		"logsBloom":         receipt.Bloom,
 		"type":              hexutil.Uint(tx.Type()),
+		"effectiveGasPrice": (*hexutil.Big)(receipt.EffectiveGasPrice),
 	}
-	// Assign the effective gas price paid
-	if !s.b.ChainConfig().IsLondon(bigblock) {
-		fields["effectiveGasPrice"] = hexutil.Uint64(tx.GasPrice().Uint64())
-	} else {
-		header, err := s.b.HeaderByHash(ctx, blockHash)
-		if err != nil {
-			return nil, err
-		}
-		gasPrice := new(big.Int).Add(header.BaseFee, tx.EffectiveGasTipValue(header.BaseFee))
-		fields["effectiveGasPrice"] = hexutil.Uint64(gasPrice.Uint64())
-	}
+
 	// Assign receipt status or post state.
 	if len(receipt.PostState) > 0 {
 		fields["root"] = hexutil.Bytes(receipt.PostState)
@@ -1669,6 +1661,7 @@ func (s *TransactionAPI) GetTransactionReceipt(ctx context.Context, hash common.
 	if receipt.Logs == nil {
 		fields["logs"] = []*types.Log{}
 	}
+
 	// If the ContractAddress is 20 0x0 bytes, assume it is not a contract creation
 	if receipt.ContractAddress != (common.Address{}) {
 		fields["contractAddress"] = receipt.ContractAddress