NEW YORK — The Nets managed to blow another game they had no business losing Sunday afternoon at Barclays Center. But in their 134-127 loss to the Portland Trail Blazers, Mikal Bridges was the best player on the court, and he desperately needed a game like this. The 6-foot-6 wing finished with a game-high 42 points with four rebounds and three assists in the loss, his most productive outing since Dec. 23. and first 40-point game since Dec. 2. And when Bridges is at his best offensively, Brooklyn typically is, too. The Nets shot 50.5% from the field and went 14-of-37 from 3-point range against …