Workers at the network “are absolutely distraught about what is going on there,” a media insider said. CBS News staffers are sending a letter to Trump-aligned boss David Ellison to demand he uphold journalistic values, Breaker Media’s Lachlan Cartwright said on MS NOW Sunday. The letter was scheduled to go out on Monday following a massive shakeup at “ 60 Minutes ” and festering questions about the future of the venerable news program. Ellison, the CEO of CBS’ overlord Paramount Skydance, has