Update Stagehand Sample App to be compatible with Stagehand v3#62

dprevoznik merged 4 commits intomainkernel/create-kernel-app:mainfrom

danny/kernel-494-create-kernel-app-update-stagehand-sample-app-to-stagehandkernel/create-kernel-app:danny/kernel-494-create-kernel-app-update-stagehand-sample-app-to-stagehandCopy head branch name to clipboard