Play area bounds are offset so that the player's spawn position is at the center of the player start

The play area is offset in game from the player start. In previous version the play area would be centered on the player start area. Now the player spawn exactly on the player start and the bounds are shifted.

1. Download the attached project
2. Open the project
3. Stand off to the side (so as not to be in the center of the play area)
4. Play in VR preview

Result: The player start (as marked by the debug sphere) will be centered on the player
Expected: The Player start would be centered on the play area

Oculus center of play area wrongly assigned to HMD in 4.17.0