Broadway held steady last week as the post-Tony season welcomes New York’s summer tourists, with attendance inching ahead of last week for a total 273,633. In all, the 32 shows grossed $28.9 million for Week 5 of the 2016-17 season, ending June 26. Hamilton, at the Nederlander Organization’s Richard Rodgers Theatre, hardly needed its Tony buzz — or news of an upcoming Hillary Clinton fundraiser — to keep its seats filled: The musical took in $2,007,222, with 10,732…