Decal normal blending rendering results in very dark texture when the blend value is exclusively between 0 and 1

How to reproduce:
1. Open the user’s attached “URPRendererTest” project
2. Focus on and observe the “Decal” GameObject in the “SampleScene” Scene

Expected result: The decal normal blending is pretty light
Actual result: The decal normal blending is very dark

Reproducible with: 14.0.3 (2022.2.0b1), 14.0.5 (2022.2.4f1), 15.0.4 (2023.1.0b2)
Not reproducible with: 12.1.9 (2021.3.17f1), 13.1.8 (2022.1.23f1), 14.0.3 (2023.1.0a19)
Couldn’t test with: 10.10.1 (2020.3.44f1) (project not compatible)

Reproduced on: macOS 13.0 (Intel)