Notwithstanding the provisions of this act, any extension of unemployment insurance coverage to political subdivisions in this State mandated by P.L. 94-566 shall be continued in effect at the option of the governing body of the political subdivision to the extent any part of the coverage mandated in P.L. 94-566 upon state and local government is either declared unconstitutional by the Supreme Court of the United States, or is repealed by an act of Congress. If P.L. 94-566 or the federal acts it amends is stayed pendente lite as to the employees of this State or one of its cities or counties by any court of competent jurisdiction, the coverage of all employees under this law is automatically stayed.