At an event where success is often measured by who’s seen at a reception or speaks on a panel, the Saudis aren’t getting the cold shoulder any more. James Gorman, the head of Morgan Stanley, spoke on Thursday in a debate alongside two Saudi ministers. And the likes of Jamie Dimon of JPMorgan Chase & Co. and John Flint of HSBC Holdings Plc attended the annual Davos party thrown by Saudi oil giant Aramco, according to a person present. “I…