MIAMI — Florida Republicans voted on Saturday to endorse Donald Trump for the GOP’s presidential nod – an unusual step for the party given that the former president still faces a primary challenge, but one that reflects the widely held belief that Trump has already run away with the nomination. The endorsement came amid a flurry of votes by members of Florida’s Republican Party during their annual meeting in Wesley Chapel. Members also moved to elect state Sen. Joe Gruters, a former Florida GOP chairman, as the party’s new national committeeman and formally oppose a proposed ballot amendment t…