I know there will be lots of back and forth about whether or not Meta deserves this fine. But the broader question I have is whether there are regulators anywhere that allow companies to pre-register their products and get a "compliance certification" beforehand.

That is, there are obviously lots of gray areas in regulations. I would be less sympathetic to the view that these aren't just cash grabs by governments if these governments provided a service to say whether a particular product in a current form was compliant. This is essentially what the FDA does with drugs, why not with other consumer products?