Did 'Glass Onion' leave a clue about 'Knives Out 3'?

With Knives Out, Rian Johnson introduced a gentleman detective who cracked cases with wild charisma — and food metaphors — that left us yearning for more. Now, Glass Onion: A Knives Out Mystery takes us further down the donut hole with Benoit Blanc, setting up a whodunnit franchise with no signs of slowing down. So what...