LONDON — School’s out. Five peers have doffed their ceremonial caps in the House of Lords, officially “proroguing” Keir Starmer’s first session of parliament nearly 22 months after he took over as Britain’s prime minister. His government has passed flagship legislation on workers’ and renters’ rights, home-grown energy and planning laws — but been buffeted by events. A revolt by Labour MPs forced Starmer into scrapping a two-child limit on welfare benefits, while the threatened closure of a