DENVER — Leave it to Markieff Morris, the much less infamous Morris twin in the hearts and minds of Mavericks fans, to bluntly blurt what many of us have wondered for weeks. Morris had just watched Luka Doncic “damn-near walk through” Portland for 40 points, 12 rebounds and 10 assists late Saturday night in Moda Center. It was Doncic’s franchise-record 10th straight game of scoring 30 or more…