Photo: Vulture When Rachel Sennott goes to the club, she wants to hear those Charli XCX classics. (And by the club, we mean the movie theater.) Promoting her upcoming film Bunnylovr, which premieres this week at Sundance, Sennott explained her role in getting Charli’s 2020 song “Detonate” on the soundtrack. Writer-director-star Katarina Zhu, who first met Sennott at NYU, had envisioned the How I’m Feeling Now track being part of the film. She cut together a teaser that her co-star and Brat pack