Sweden’s Sara Hector capped an incredible comeback season with giant slalom gold at the Beijing Olympics on Monday while American star Mikaela Shiffrin was among several prominent casualties. Hector held on to her first run lead for victory in 1 minute 55.69 seconds in Yanqing, winning the discipline 30 years after compatriot Pernilla Wiberg. Italy’s Federica Brignone added silver to 2018 bronze, .28 of a second back, and reigning world champion Lara Gut-Behrami of Switzerland roared from eighth to bronze, .72 off the pace. Hector won a first World Cup race in 2014 but then struggled with her …