Manager Aaron Boone acknowledged the Yankees had been “holding our breath” on the status of Jasson Domínguez , but they can seemingly exhale.  After Domínguez was drilled in the left elbow Wednesday and initial X-rays were inconclusive, further imaging came back clean, Boone said.  Domínguez was not in Friday’s starting lineup but Boone hoped he would be available off the bench.  “He was much improved [Thursday], much improved today,” Boone said before beginning a series with the Orioles in The Bronx. “He’ll go through pregame today, do all his baseball activities and see where we’re at.”  Domínguez left the series finale in Arlington in the fourth inning in just his third game of the season after being called up to replace the sidelined Giancarlo Stanton.…