LAS VEGAS—Breanna Stewart and her U.S. Olympic teammates aren’t panicking, even though they’ve lost consecutive games for the first time in a decade. Two days after losing to a team of WNBA All-Stars, the Americans fell to Australia 70–67 on Friday in a pre-Olympic exhibition game. “There’s a standard and the standard is winning and we haven’t gotten to that point yet,” said Stewart, who scored 17 points for the United States. “It’s frustrating, it’s part of the game and part of the process. When we get to Tokyo and get to the Olympics that’s when it’s really, really crunch time. We’re continuing to elevate and get better every day. We’ll get to where we want to be.” The United States struggled from the outside, missing 16 of its 18 3-point attempts. The Americans, who got together as a team for the first time earlier this week, also had 18 …