DirectoryNotFoundException is thrown when .shadergraph file path has a lot of characters

Unity: ShaderGraph

6.3.X

6.0.X

6.6.X

6.5.X

6.4.X

6000.4.8f1

How to reproduce:
1. Open the attached “Shader.zip“ project
2. Observe the Console

Actual result: Errors are thrown
Expected result: No errors are thrown

Reproducible with: 2023.1.0b1, 6000.0.70f1, 6000.3.11f1, 6000.4.0b12, 6000.5.0a8

Reproducible on: Windows 10 (22H2)
Not reproducible on: macOS 26.3 (M1 Max)

Note: This only happens with .shadergraph files