Mikaela Shiffrin sat next to the piste for a long time after going out in the Olympic slalom on Wednesday and it remains to be seen whether she will compete again at the Beijing Games. The American ski star failed to finish for the second time after also going out early in Monday’s giant slalom. A Did Not Finish result is highly unusual for the 26-year-old who won slalom gold in 2014 and giant slalom gold in 2018, boasts six world titles and 73 World Cup top spots, including a discipline world record 47 in the slalom. Shiffrin said before the Games she planned to compete in all five individual…