ShardingTaskExecutorPoolMinSize F/U

[peterjan]

I think we should at least make an issue as a follow-up to see whether this change took effect. It's undocumented and it's usually stuff like this that ends up to be a misconfiguration one year from now that's causing some super exotic issue leaving us scratching our heads for a week 😁 Approved it nonetheless I hope it works

Originally posted by @peterjan in SkynetLabs/skynet-webportal#2038 (review)