How to reproduce:
1. Create a new 2D Unity project
2. In the Hierarchy, right-click -> Light -> Spot Light 2D
3. In the Scene view, observe the "Edit Shape" button in the Light 2D Overlay
Expected results: The icon is high resolution
Actual results: The icon is low resolution
Reproducible with: 6000.0.66f1, 6000.3.4f1, 6000.4.0b5, 6000.5.0a5
Reproducible on: macOS Tahoe 26 (M1)
Not reproducible on: No other environment tested