PORT ST. LUCIE, Fla. — U.S. Rep. Byron Donalds, the Trump-endorsed frontrunner for Florida governor, packed a restaurant Sunday for a “Defending the Florida Dream” get-out-the-vote rally, sharing his family’s hardscrabble start, outlining plans to ease housing and insurance costs, and sharply criticizing Democratic rival David Jolly as a threat to the state’s conservative gains.… The post Donalds packs Port St. Lucie rally, hits Jolly and touts …