At the bottom of the article (it was a long one) they mentioned this.

basically you use a game engine (unreal typically) to act if front of circular led tv wall and act inside. It helps with ambient lighting.

Details about the madelorian from Disney use of this:.

https://www.starwars.com/news/the-mandalorian-stagecraft-fea...

Industrial light and magic (vfx house of old) has a bunch of these setups to rent now. Stagecraft is what they call it.

https://www.ilm.com/ilm-stagecraft/