I can publish the individual playgrounds on my website, but opening the zipped file is clunky. If I host playground.playgroundbook.zip, it tries to open but gives an "Unsupported File Format" error. If I just host playground.zip, I must go through the Files app. Is there a different way I am supposed to be zipping my app playground so that it will open correctly on click? This is a really frustrating change, made worse that it is not communicated in release notes or documentation.