Function validate_warmstart_teacher_transition_against_contract 

pub fn validate_warmstart_teacher_transition_against_contract(
    contract: &WarmStartExactJhTeacherContract,
    action: Action,
    observations: &[PerceptVal],
    reward: Reward,
) -> Result<(), WarmStartExactJhError>

Validate one reconstructed teacher transition against a warm-start bridge contract.