VR client doesn't disconnect from the server until player presses "quit" button

The VR client disconnects from the server when the player presses the Quit button at the end of the game. However, many players go to take off the headset before pressing the quit button, and need to be prompted to press the quit button.

It would be simpler to have the VR client disconnect at the end of the final task instead, so that the player can press Quit if they want to, but the server does not depend upon this.