A Study to Find Out if the 3 Different Batches of RSVpreF Vaccine Were Safe and Produced the Same Antibody Response Against Respiratory Syncytial Virus. A Phase 3, Randomized, Double-Blind, Placebo-Controlled Study to Evaluate the Safety, Tolerability, and Immunogenicity of 3 Lots of Respiratory Syncytial Virus (RSV) Prefusion F Subunit Vaccine in Healthy Adults.