The recent act passed in by the UK Parliament EU Withdrawal No.2 Act, that forces the Prime Minister to seek an extension if no deal is agreed or parliament does not agree to no deal, is said by the Prime Minister to bind his hands when negotiating with the European Union.
If Parliament is prorogued (legally for a few days) in order for a Queens Speech and creating a new Parliamentary Session, would the bill mentioned above be an example of a bill that binds the future Parliament which is shown in this answer to not be allowed by the UK's uncodified constitution?