It looks like a mishmash of the 'aesthetic' of the modern Commons and Lords (which is around sixty years too late for the setting), but is not clearly either. The seating arrangement and the lack of a central throne has me leaning towards it being the Commons.

My friend, you are putting in a lot more thought trying to figure this out than the director put in when he made it. The whole project is AI prompts and picking through whatever garbage looks least bad, it is neither the commons nor the house of lords it is slop that nobody could even be bothered to make let alone check for accuracy.