Remove notes before triggering cache invalidation

[lynn]

Should fix the issue reported by taq in #toashuaq here.

Calling emitter.emit('removenote') before doing word.notes = keep means the removed note is still attached to the word when this code in search.ts recomputes the cache entry:

for (let k of ['vote', 'note', 'removenote', 'edit', 'move'])
	emitter.on(k, (_, entry) =>
		cache.splice(cached_index(entry.id), 1, cacheify(entry)),
	);

and then the removed note is still in the cache when answering a search query.

[uakci]

lgtm :33 and thank you!