Just when you think you can’t tolerate another Beatles documentary , along comes one that you truly might not be able to tolerate. With John Lennon: The Last Interview, premiering here at the Cannes Film Festival, Steven Soderbergh covers some potentially rich, or at least just affecting, territory. On Dec. 8, 1980, John Lennon and Yoko Ono sat down at their home in the Dakota with a small crew from San Francisco’s KFRC radio. It was the only radio press Lennon and Ono would be giving to