Iridescence in Standard shader is not recorded correctly with render from PV camera

Original issue: https://github.com/microsoft/MixedRealityToolkit-Unity/issues/9719

Describe the bug

When recording a video on HoloLens 2 with Render From PV Camera enabled the iridescence part of the MRTK Standard shader is not recorded correctly. When Render From PV Camera is disabled the recorded video is as expected.

Expected behavior

When recording with Render From PV Camera enabled I would like to see the same outcome in the recorded video as what a user sees in HoloLens.

Screenshots

Here's a demo in Unity and a recording afterwards (with Render From PV Camera enabled)
https://www.youtube.com/watch?v=3ustSanqxD0

Your setup (please complete the following information)

Unity Version 2019.4.20f
MRTK Version 2.7.0-preview.3

Target platform (please complete the following information)

• HoloLens 2

Additional context

n/a

Inizia riproducendo la registrazione in Unity 2019.4.20f su HoloLens 2 con Render From PV Camera abilitato, concentrandoti sull’iridescenza del MRTK Standard shader. Confronta il video registrato con la visuale dell’utente e identifica il punto di ingresso del rendering che gestisce l’output della PV-camera; il lavoro è completato quando l’iridescenza appare correttamente nella registrazione.