Reproduction steps:
1. Open the attached “IN-100469.zip” project
2. From the Project Window, select “TestShader”
3. Right-click on it and select “Reimport”
4. Observe the Console and Shaders' information in the Inspector

Expected result: Shader compiles, and no compiler errors are shown
Actual result: Shader fails to compile with “undeclared identifier 'FOG_EXP'“ error

Reproducible with: 6000.1.0a5, 6000.1.4f1, 6000.2.0b3
Not reproducible with: 2022.3.62f1, 6000.0.50f1, 6000.1.0a4

Reproducible on: Windows 10 (User reported), Windows 11
Not reproducible on: No other environment tested

Notes:
- The Material with the Shader is also rendered pink in the Scene/Game view
- This appears to be due to an internal URP flag (FOG_LINEAR_KEYWORD_DECLARED) being set by the pragma, causing URP's fog logic to incorrectly attempt access to the undeclared FOG_EXP keyword in certain variants