LPS-38440 Use the proper groupId when getting the site locales

Hey Julio,


this is a really small and straightforward fix, so I thought a test might be not necessary in this case. The problem is when the vocabulary comes from a lar and this lar is not from the same server the entity's group can't be found via the group local service, so we should use the current scope group instead of the actual entity's group.

thanks,
Daniel