LOS ANGELES Seven years after her landmark debut “Invasion of Privacy,” Cardi B has returned. And, in typical fashion, she’s doing it with plenty of spectacle. The Grammy winner made her long-awaited sophomore album “Am I the Drama?,” released Friday, feel like prime-time theater. The release on Sept. 26 arrived days after she revealed she revealed her fourth pregnancy — her first child with New England Patriots wide receiver Stefon Diggs — and barely two weeks after she emerged victorious from