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

Comienza reproduciendo la grabación en Unity 2019.4.20f en HoloLens 2 con Render From PV Camera habilitado, centrándote en la iridiscencia del MRTK Standard shader. Compara el vídeo grabado con la vista del usuario e identifica el punto de entrada de renderizado que gestiona la salida de la PV-camera; el trabajo estará terminado cuando la iridiscencia aparezca correctamente en la grabación.