WASHINGTON — In a dispute about the pressure that organized labor can exert during a strike, the Supreme Court ruled Thursday against unionized drivers who walked off the job with their trucks full of wet concrete.The decision united liberal and conservative justices in labor’s latest loss at the high court. The lone dissenter in the case, Justice Ketanji Brown Jackson, said the ruling would hinder the development of labor law and “erode the right to strike.”Justice Amy Coney Barrett, writing for …