WASHINGTON — The Supreme Court has begun hearing former President Donald Trump’s appeal to remain on the 2024 ballot, the justices’ most consequential election case since Bush v. Gore in 2000.The court, meeting Thursday, is weighing arguments over whether Trump is disqualified from reclaiming the White House because of his efforts to undo his loss in the 2020 election, ending with the Jan. 6, 2021, attack on the U.S. Capitol.The case marks the first time the justices are considering a constitutional …