How to reproduce:
1. Create a new Unity project and install the VFX Graph package
2. Create any Shader Graph and open it
3. Create any VFX Graph and name it exactly the same as the Shader Graph
4. Open the VFX Graph and observe the icon on the Shader Graph tab header

Expected results: The icon of the Shader Graph tab remains the same
Actual results: The icon of the Shader Graph tab changes to VFX Graph tab icon

Reproducible with: 6000.0.50f1, 6000.1.5f1, 6000.2.0b2

Reproducible on: macOS Sequoia 15.4 (M1)
Not reproducible on: No other environment tested