How to reproduce:
1. Open the user's attached project
2. In the Project view, open the folder "Bug"
3. Double-click the Asset "New Shader Graph" to open the Shader Graph window
4. Observe the Simple Noise and New Shader Sub Graph nodes and observe the Console

Expected result: no conflicting implementation errors are displayed in the Shader Graph window or the Console
Actual result: Shader Graph has 56 errors, the first is: Validation: Function `Unity_SimpleNoise_RandomValue_$precision` has conflicting implementations <...>

Reproducible with: 12.0.0 (2021.2.0a9), 12.1.1 (2021.2.4f1), 13.0.0 (2022.1.0a11)
Not reproducible with: 10.7.0 (2020.3.23f1), 11.0.0 (2021.1.28f1), 12.0.0 (2021.2.0a8), 13.0.0 (2022.1.0a12)
Could not test with: 7.7.1 (2019.4.33f1) (ArgumentException: JSON parse error: The document root must not follow by other values)