Majestic theatre, New YorkA standout turn from Jessica Vosk, taking on the Bette Midler role, isn’t enough to turn a much-loved movie into a legitimate stage showGarry Marshall’s 1988 film Beaches is no testament to subtlety. But in its gauzy, hustling way it is an effective tear-jerker, poignantly tracing decades of a friendship as it unwittingly approaches tragedy. Because Bette Midler is one of its stars, Beac…