Possibly. They’ve asked people for images of their IDs before, supposedly to prove they are not using a pseudonym. I wouldn’t be surprised if they asked you to confirm your location for something drastic and not-desired-by-fb such as account and data deletion.
They will not ask for location like that, because it wouldn't make a difference - EU citizens in a non-EU part of the world still have the rights outlined in the GDPR.
