Any person making an application to the Planning Board who, by agreement with the Planning Board or by unilateral action, waives or otherwise extends any period of time established by law for action of any kind by the Planning Board shall also be deemed to waive any claim relating to the expiration of such period of time and shall be estopped from asserting a claim against the Village, its boards, officers, agents, consultants or employees, and the Village, its boards, officers, agents, consultants and employees may raise such waiver as an absolute defense or counterclaim in any such action or proceeding.