Ben Affleck will reportedly avoid a red carpet reunion with his estranged wife Jennifer Lopez by skipping the premiere of their new film. Jennifer stars in ‘Unstoppable’ – which was produced by Ben – and it’s set to debut at the upcoming Toronto International Film Festival in Canada next month but a new report suggests Ben will be absent from the film’s glitzy red carpet premiere so he can avoid a potentially awkward public encounter with the singer/actress after she filed for divorce. A source told New York Post column Page Six that Jennifer will attend the screening on September 6 but Ben ha…