were announced Thursday by host James Monroe Iglehart, one category stood out: For Best Actor in a Musical, there was just a single nominee: Aaron Tveit, the star of “Moulin Rouge! The Musical.” That means Tveit will almost certainly win the award.Why almost?According to the official rules, “If the Tony Awards Nominating Committee has determined that if there is only one nominee in a category listed, such category shall be submitted to the Tony Voters which may, by the affirmative vote of 60