Claims for damages resulting from the disaffirmance of an executory contract or lease by the commissioner may be filed and allowed. No claim of a landlord for damages resulting from the disaffirmance of an unexpired lease of real property or under any covenant of such lease shall be allowed in an amount exceeding the rent reserved by the lease, without acceleration, for the year succeeding the date of the surrender of the premises plus the amount of any unpaid accrued rent without acceleration. Any such claim must be filed within 30 days of the date of such disaffirmance.