A real estate company that had its zoning application denied by the Chicago City Council’s zoning committee is challenging the longstanding tradition of aldermanic prerogative, which allows city council members to have the final say over new developments in his or her ward.GlenStar O’Hare LLC filed a 12-count complaint last month in Cook County Circuit Court against the city that asserts the city council and its zoning committee unlawfully used the aldermanic prerogative to deny GlenStar’s proposed …