The board of directors of a domestic insurer may at any time adopt emergency bylaws, subject to repeal or change by action of those having power to adopt regular bylaws for the insurer, which shall be operative during a national emergency and which may, notwithstanding any different provisions of the regular bylaws, or of the applicable statutes, or of the insurer’s charter, make any provision that may be reasonably necessary for the operation of the insurer during the period of the emergency.