I only have the iPhone XR but after the update, when I went to view my son’s location it showed the basic map and I had it set to satellite before the update. To get the satellite view back, I went to his message, tapped the little arrow> and it took me to the location map. It was the basic map. If I tap on the map itself to open it bigger, there is a map tab at the top right that lets me switch the view. It’s now back to satellite view again. Instead of seeing the location in satellite as soon as I go in, I see the basic map but once I tap on it it’s satellite. Hope that makes sense. You don’t need to do the find me in group chats only.