`reaction-avatars`: null is not an object (evaluating 'commentReactions.closest("[data-body-version]").dataset') #4845

This happens whenever reacting on a review comment, because they're not wrapped in a div with the data-body-version attribute. Also, only the reactions part gets replaced instead of the whole comment wrapper.

https://github.com/sindresorhus/refined-github/blob/1d858670461a256b29dda730112a0e965b48f6f2/source/features/reactions-avatars.tsx#L70-L72

Is there a reason why onReplacedElement() was used here instead of onElementRemoval() directly? Otherwise, this is a pretty easy fix (and solves #4591 as an added bonus):

await onElementRemoval(commentReactions.closest('.comment-reactions')!);
init();

Not sure, but onReplacedElement is supposed to be the higher level version, basically a selector-observer for existing elements that are just updated over time.