Shaders with #include "UnityCG.glslinc" fail to run when building for WebGL

Unity: WebGL

2021.3.X

2021.2.X

2023.1.X

2022.3.X

2022.2.X

2022.1.X

2020.3.X

Fix WebGL shader preprocessor that caused errors for some shaders

Canceling port as Unity 2022.1 is near its end of support.

Canceling ports as 2020.3 has reached its end-of-support lifetime, and is no longer accepting fixes.

Reproduction steps:
1. Open the attached project
2. Build and Run for WebGL

Expected result: Build runs successfully
Actual result: Build fails in the browser

Reproducible with: 2021.2.0b1, 2021.2.19f1, 2021.3.2f1, 2022.1.0f1, 2022.2.0a12
Not reproducible with: 2019.4.38f1, 2020.3.34f1, 2021.2.0a16

Note: