Amazon executives were brainstorming a list of female directors in late 2024 for a documentary about Melania Trump, a project the company had bid $40 million to distribute.  What some of these executives didn’t know, according to people familiar with the deal, was that the first lady had already picked her guy: Brett Ratner, the director of the “Rush Hour” franchise. Once a major force in the movie industry, his career was derailed in 2017 over allegations of sexual assault and harassment, which he denied. There were no charges filed against him.  The return of Ratner, 56, is one of…