Bruno Mars has spent more than 15 years racking up huge hits at pop radio throughout the United States. During that time, he’s produced some of the most successful singles in the history of the top 40 airwaves, and he’s not done yet. The singer-songwriter scores yet another champion this week, and as he adds to his growing collection, he matches several fellow superstars. “Apt.,” Mars’ collaboration with Blackpink singer Rosé, rises to No. 1 on the Pop Airplay chart this week. The tune ascends