Blending does not work as intended when Material Layers are used in post process.

Steps to Reproduce

1. Open the attached project
This project uses Material Layers and sets the Material to Post Process Volume.
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2. Change the Blend parameter of Post Process Volume
If not 1, no Material Layers blending has been applied.
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ComponentUE - Rendering Architecture - Materials
Affects Versions5.0.35.1
Target Fix5.5
CreatedDec 14, 2022
UpdatedJan 19, 2024