Bryce Harper, like many in his hometown, has fallen for the Vegas Golden Knights. The baseball star says he’s more nervous during a Knights Stanley Cup playoff game then when his Washington Nationals play.“I don’t get nervous watching my team or when I play at all. I really don’t,” he told USA Today. “But when I’m watching them, I get so nervous. I’ll sit on the couch with my wife, going nuts. ... It’s unreal.’’ He’s not the only notable who has gone all-in on the Knights …