Kate Winslet shattered a film record set by Tom Cruise after she held her breath underwater for seven minutes while filming a scene for “Avatar 2.” The “Titanic” actress is re-teaming with director James Cameron for a follow-up to his massively successful 2009 film.The Oscar winner’s role in the upcoming blockbuster sent her back to the water, where she underwent extensive training and ended up breaking a record that Entertainment Tonight notes was previously set by Cruise in “Mission