Add #not_potion tag to prevent automatic draining and spouting

[johnhoffm]

Some modded items extend PotionItem, but aren't really potions. The best example of this is the jelly bean from Alex's Caves where it doesn't make sense that it drains and becomes a bottle. I think adding an item tag is the best way to prevent this in the general case. This also could have worked for the tinker's construct buckets in #6316, #4124

PR targets 1.20.1 since this is where I see the problem, but could also work on other versions.

Without tag:
Throwing a jelly bean on an item drain, drains it and produces a bottle.

With tag applied to alexscaves:jelly_bean:
The recipe does not exist, and jelly beans do not drain into an item drain.

[simibubi]

Thanks!