A Phase III, Randomized, Open-Label, Multicenter, Global Study of Volrustomig (MEDI5752) in Combination with Carboplatin plus Pemetrexed Versus Platinum plus Pemetrexed or Nivolumab plus Ipilimumab in Participants with Unresectable Pleural Mesothelioma (eVOLVE-Meso)