By Michael Rosenberg Team Shuster lost in the bronze medal game to Canada on Friday, but they did not forget the attitude that made them an instant sensation in 2018. BEIJING – This was an Olympic curling disappointment, if you believe in such things, but life is a lot more fun if you don’t. You might remember the United States men winning gold medals and a few hundred thousand hearts in PyeongChang in 2018 with their let’s-just-have-some-fun approach. They lost the bronze medal match here Friday. They did not forget their approach. If you loved John Shuster and the boys four years ago, you sh…