How can I delete a persistent cookie in my "Sites that can never use cookies" list?

Tossing this your way to see if it might help @Heidi2

I know you tried at least some. In the meanwhile, I’m going to loop @Mattches into this because I know this issue keeps coming up.

It occurred in August but eventually closed with no updates, over at "sites which are always allowed to use cookies", trashing does not work - #14 by MrPassey

Had a more recent at Undeletable cookies

And I know they had some dating back to like 2020 where a GitHub was linked. Someone posted last month that the issue still hasn’t resolved.