AL RAYYAN, Qatar — Christian Pulisic had waited 1,868 days, and Tim Weah almost as long, to hear the roar. They had endured the darkest five years in American soccer history for nights like Monday, for an opportunity to bring a nation to its feet, for a chance to lift a lifetime of work onto a World Cup stage. They had suffered, and slapped away doubts, and persevered to feel an explosion. At 10:36 p.m. here at the Ahmad bin Ali Stadium, they scored the goal that instigated it — and for an hour, it appeared that they’d won the U.