feature request: still show cell source when javascript is disabled in the browser

Right now, if an Observable notebook is opened in a browser with Javascript disabled, the result is a completely blank page.

It would be great if the source for every cell (ideally in a reasonably styled way, like a non-editable, non-interactive version of safe mode) would still show up on the page, possibly with a notice at the top warning the reader that the site needs Javascript enabled to function properly.