Reproduction steps:
1. Open the attached “Test Project” project
2. Build the Project with “SampleScene” Scene
Expected result: The project builds without any errors
Actual result: The console prints out “Shader error in 'Valve/VR/Silhouette': glslang: 'gl_Layer' : identifiers starting with "gl_" are reserved at line 35 (on vulkan)” error
Reproducible with: 2021.2.14f1, 2021.3.19f1, 2022.2.9f1, 2023.1.0b6, 2023.2.0a5
Not reproducible with: 2020.3.45f1, 2021.2.13f1
Reproducible on: Ubuntu 22.04, Windows 10