Emoji should be validated better
Emoji are currently explicitly just one character. Even simple emoji like the red heart are actually built with modifiers. We should find a way to validate these modified emoji as well, without allowing nonsensical or multi-glyph combinations.
Weird bug, but it looks like the heart emoji listed in the reactions menu is a red heart, and it needs to be a plain one, otherwise there's a 500 error when reacting:
- '❤️', + '❤',