MILAN — When Alysa Liu retired from figure skating in 2022, it was to experience some of the simple things in life. Drive her siblings to school, take a vacation, hang out instead of practicing. Be a normal person. On Thursday, she showed what makes her special. Liu won gold in the women’s single skating event, the first American to medal since 2006 and the first to win gold since 2002. What makes Liu’s win extra rewarding for her is not simply that she finished on the top of the podium, but