Clinical Study No. B8011006, A Phase 3, Multinational, Randomized, Open-Label, Three Parallel-Arm Study of PF-06801591, an anti-PD-1 antibody, in Combination with Bacillus Calmette-Guerin (BCG Induction With or Without BCG Maintenance) Versus BCG (Induction and Maintenance) in Participants with High-Risk, BCG-Naïve Non-Muscle Invasive Bladder Cancer