WASHINGTON — The U.S. Supreme Court has rejected an appeal from a conservative think tank over Gov. Tony Evers’ decision to exclude the group’s writers from press briefings.The justices acted without comment Monday, leaving in place lower court rulings that said the decision is legal.The John K. MacIver Institute for Public Policy filed the lawsuit in 2019 alleging that Evers, a Democrat, violated its staffers’ constitutional rights to free speech, freedom of the press and equal access.Former Gov …