The past two years have been a whirlwind of success for Doja Cat, who emerged from TikTok virality to become one of radio’s most beloved artists of the young decade so far. And she’s been on the type of hot streak that has her in rarefied territory: With five top five hits on Pop Airplay off her latest album, the RCA-released Planet Her, her album became just the seventh to ever accomplish that feat, a mark she set over the course of an entire calendar year — an impressive achievement in an era when attention spans are short and longevity is fleeting. This week, Doja Cat adds to her run of success as her latest single “Vegas,” off the Elvis soundtrack (also out on RCA), became her sixth No. 1 single at Pop Airplay — replacing her collaboration with Post Malone, “I Like You (A Happier Song)...