[ ArmoredChat.js ] Add a way to lock or disable external window mode when in VR

[Armored-Dragon]

When someone hops into VR with the external window open, the chat window becomes inaccessible due to the window being on their desktop and not whiten the application. There should be some kind of setting that would force the window to return to the application while in VR, but return it to its desired state outside of VR.