Even if she had packed it in at the end of 2021, PinkPantheress would have been safe in the knowledge that she had remade a good swathe of pop’s underground in her own image. With just a few viral singles and one great mixtape, to hell with it, the 21-year-old Londoner supercharged TikTok’s drum’n’bass revival, spawned a legion of imitators, and reintroduced the influence of UK dance music to the U.S. charts. Her sweet, Lily-Allen-at-the-rave vocals were inescapable throughout last year’s summer festival season, with everyone…