v1.78.0 of VSCode imposes max-height of CodeTour step window

[kazemicode]

VSCode v1.78.0, specifically, this PR, imposes a strict max-height for the UI component that CodeTour steps are displayed in. For anyone who uses CodeTour to embed images/video, this means that any media that surpasses this max-height cannot be seen in the frame all at once. I've proposed a VSCode feature request to expose functionality via the VSCode API to set the max-height rather than having an imposed max-height. At this time, it's unclear what the default behavior will be. If the default behavior goes back to dynamically adjusting the height of the UI component with the length of the content, no changes are warranted on the CodeTour side. If, however, the default behavior stays as it is now (a default max-height), we will need to specify a larger max-height value for CodeTour windows to display media in a non-cumbersome way.