§ 2420. Court proceedings; preferences; venue. Any action or proceeding to which the agency or the people of the state of New York may be parties, in which any question arises as to the validity of this act, shall be preferred over all other civil causes except election causes in all courts of the state of New York and shall be heard and determined in preference to all other civil business pending therein except election causes, irrespective of position on the calendar. The same preference shall be granted upon application of counsel to the agency in any action or proceeding questioning the validity of this title in which he may be allowed to intervene. The venue of any such action or proceeding shall be laid in the county in which the principal office of the agency is located.