Function validate_against_parent_4844

pub fn validate_against_parent_4844(
    header: &Header,
    parent: &Header,
) -> Result<(), ConsensusError>

Validates that the EIP-4844 header fields are correct with respect to the parent block. This ensures that the blob_gas_used and excess_blob_gas fields exist in the child header, and that the excess_blob_gas field matches the expected excess_blob_gas calculated from the parent header fields.