T8N updates for Prague Devnet-4 Changes

[marioevz]

This is a tracking issue to update the result output from t8n to include the two new fields that are necessary to fill tests after Prague Devnet-4:

• requests_hash: Requests hash after execution of all transactions according to EIP-7685: https://eips.ethereum.org/EIPS/eip-7685#block-header
• requests: List of byte arrays (of exact length of three elements as of Prague) containing the request_data (without request_type) of each request type after execution of all transactions.