These were most likely meant to be entered as magic jar items. I'm surprised we don't already have RG_ entries for RG_MAGIC_JAR_SMALL and RG_MAGIC_JAR_LARGE, but we probably should add those, make item table entries, and place them into these pots so that jars are added to the pool properly.

I imagine this is because there are no chest or freestanding magic jars in the game, all sources of magic are temporary drops from pots, grass or enemies. They would likely need a custom item implemented for them, which exposes the issue of a graphic, as the 3D drops setting currently uses the magic meter graphics for the magic jars...

There is vanilla items for magic jar refills, and the progressive magic items display particles with them, much like the progressive nuts/sticks vs nut/stick refills.

To clarify, we don't have to do this in this PR. I was more-so proposing a suggestion to try and maintain the vanilla item pool (we can track that as an issue and decide/resolve later).