INDIANAPOLIS – This was a night the 76ers may want to soon forget. Joel Embiid was sluggish, out of position on defense, and also had a left knee scare after awkwardly falling. Tyrese Maxey struggled to make outside shots and defensive stops. And Tobias Harris was sidelined with an illness. All that led to the Sixers suffering a 134-122 loss to the Indiana Pacers Thursday night at Gainbridge Fieldhouse. The loss dropped them to 29-14 and snapped a six-game winning streak. Meanwhile, the Pacers improved to 25-20, ending a three-game skid. It was Indiana’s second win in seven games. But this vic…