>I have no idea if that version of the data would work with this version of the engine, though.
IIRC the Mac version doesn't use the original data files, but converted them to use the Mac's resource file format. And judging from a quick look at the source code it doesn't contain support for the original data files.
So: no, you'll have to use the Mac version's data files.
Given that there's a topic "hypercard_xcmd-xfcn" I'd wager they are. Archive.org is essentially emulating a Mac Plus that runs HyperCard in the browser.
* The bags apparently aren't even vacuum-sealed (there's a "breathing hole")*
Wouldn't the content (at least the liquid part of it) leak through the hole?
But they don't pasteurize the bag's content, so it will spoil a lot faster than, say, juice you buy at a supermarket. They use their fancy QR code to make sure a bag hasn't expired, essentially providing an over-engineered solution to a problem they created in the first place.
That's probably why it was removed.