WEST LAFAYETTE, Ind. — When Michigan walked into Mackey Arena, it had its sights set on leaving with a signature win. The Wolverines had their chance. They put up a fight against one of the top teams in the nation, mucked the game up and trailed by four with two minutes remaining. But Michigan couldn’t get enough stops against one of the best offenses in the country, made a pair of critical turnovers down the stretch and fell short in an 82-76 loss to No. 4 Purdue on Saturday. Sophomore center Hunter Dickinson scored a career-high 28 points for Michigan (11-9, 5-5 Big Ten), which shot 55.8% fr…