However, a player discovered that if you obtain the Black Eye Orb through illegitimate means (the process can't be discussed here since it allows cheating), you can use it to invade Shiva in the Painted World. It works, no other hacking/ modding is necessary to find and invade Shiva there.
https://youtu.be/mHfydpAIoP8
It appears to not have any of the dialog, though.
Independent verification comes from an Xbox player who did the same thing and took some pictures:
https://imgur.com/a/BLxE4#1