A Prospective, Open-Label, Randomized, Phase 3 Trial of Acasunlimab (GEN1046) in Combination With Pembrolizumab Versus Docetaxel in Subjects With PD-L1 Positive Metastatic Non-Small Cell Lung Cancer After Treatment With a PD-1/PD-L1 Inhibitor and Platinum-Containing Chemotherapy (ABBIL1TY NSCLC-06)