Seven seasons and counting. That’s how long it’s been since the Nuggets won in San Antonio against the Spurs, and Monday night, Denver extended its losing streak another year. Behind 24 points from DeMar DeRozan and 22 more via LaMarcus Aldridge, the Spurs edged the Nuggets 104-103 and handed the Nuggets their third-straight loss. The last time Denver won in…