LeBron James had a three-letter response in a group chat when he found out that Anthony Davis had been traded as part of a deal that sent Luka Dončić to the Lakers earlier this year.  “WTF,” the NBA superstar wrote on the February night one of the biggest trades in NBA history took place, according to details in NBA journalist Yaron Weitzman’s new book “A Hollywood Ending: The Dreams and Drama of the LeBron Lakers.”   Bronny James, LeBron’s son and a rookie with the Lakers, was the one to post