How to reproduce:
1. Create a new Unity project and install the VFX package
2. In the Project window, right-click -> Create -> Visual Effects -> Visual Effect Graph
3. In the "Create new VFX Asset" window, double-click a "Favourite" button near any Template
4. Observe the results
Expected results: The Template is favourited and unfavourited
Actual results: The Template is favourited and then created
Reproducible with: 6000.5.0a5, 6000.5.0a8
Can't test with: 6000.0.69f1, 6000.3.10f1, 6000.4.0b11, 6000.5.0a4 (No favourite button)
Reproducible on: Ubuntu 24, macOS Tahoe 26
Not reproducible on: No other environment tested