Deferred Technical Preview renders incorrectly in VR

Unlike Ray Tracing, the new Deferred Lighting Pipeline can be enabled while in VR. However, it doesn't correctly switch to the Deferred graphics mode.

Steps to Reproduce:

1. Create a world with the "Render Dragon Features for Creators" experiment
2. Equip a PBR or raytraced resource pack
3. Open the world in VR
4. Enable the "Deferred Technical Preview" graphics mode

Observed Results:

The game continues to use the normal lighting. Water becomes invisible and blocks are unaffected by light level, making them fully visible at night.

Expected Results:

The game should switch to the Deferred graphics mode and have shadows, like it does when not in VR.

Screenshots/Videos:

Enabling Deferred.mp4
Deferred vs Fancy.mp4

Notes:

Toggling between Deferred and Fancy decreases the resolution of the preview window, but the resolution displayed in the headset remains the same.