Wednesday night in New Orleans wasn’t a win, but it was something the Nets have been starving for. It was a glimpse. Not of this season. Not of the standings. But of what Brooklyn’s backcourt could look like when the rebuild stops being theoretical and starts becoming obvious. Rookies Egor Dëmin and Drake Powell gave the Nets that peek in that 116-113 loss to the Pelicans, putting together the …