CHARLESTON, S.C. — For maybe the last time, Alex Murdaugh, in a prison jumpsuit instead of the suit he used to wear, shuffled into a courtroom Monday in South Carolina and was sentenced to 40 years in federal prison.Murdaugh was punished — this time in federal court — for stealing from clients and his law firm. The 55-year-old disbarred attorney is already serving a life sentence without parole in a state prison for killing his wife and son.Federal agents had recommended a sentence from 17 1/2 to just …