Bob GarverContributorIt was in the spring of 2004 that I first saw Idina Menzel and Kristen Chenoweth perform the showstopping “Defying Gravity” from the Broadway blockbuster “Wicked” at the Tony Awards. Since that moment was over 20 years ago, it means that I have waited literal decades for a big-screen version of “Wicked.” I’ve more than satisfied my appetite for the stage version, having seen it five times, once with Menzel still in the cast (sadly never with Chenoweth). But I’ve always wanted the vast production to be available to the world, with added scale and visual spectacle to boot. Now the wait is finally over, and the result is… reasonably acceptable.The story takes place before, during, and after the well-known events of “The Wizard of Oz.” As