§ 204. Stay of commencement of action; demand for arbitration. (a) Stay. Where the commencement of an action has been stayed by a court or by statutory prohibition, the duration of the stay is not a part of the time within which the action must be commenced. (b) Arbitration. Where it shall have been determined that a party is not obligated to submit a claim to arbitration, the time which elapsed between the demand for arbitration and the final determination that there is no obligation to arbitrate is not a part of the time within which an action upon such claim must be commenced. The time within which the action must be commenced shall not be extended by this provision beyond one year after such final determination.