Norah Jones released her blockbuster debut, “Come Away With Me,” in February 2002, it was just five months after 9/11.Now — 18 years, nine Grammys and two kids later — the Brooklyn-based piano woman is back torching the ivories with “Pick Me Up Off the Floor,” her new studio LP, which arrives Friday in the wake of a global pandemic and Black Lives Matter protests that have rocked the world.“I remember back then not making the connection of people being comforted by music after 9/11,” Jones, 41, tells The Post. “I didn’t think about it as it was happening.