rearranged logic to fail if a dataset that should have consistent session files doesn't
rearranged logic to fail if a dataset that should have consistent session files doesn't

Squishymedia/BIDS-Validator,Squishymedia/bids-validator,suyashdb/bids-validator,chrisfilo/bids-validator,nellh/bids-validator,nellh/bids-validator,nellh/bids-validator