fix : borTx chainID

[0xsharma]

Description

In this PR, we fix the issue in which bor transaction was showing chainID 0x7fffffffffffffee. Bor transaction did not usually output a chainID but was recently introduced to do so with the upstream from go-ethereum ( below ).

// if a legacy transaction has an EIP-155 chain id, include it explicitly

if id := tx.ChainId(); id.Sign() != 0 {
	result.ChainID = (*hexutil.Big)(id)
}