"GPU Time Threshold" in VFX Graph Heatmap Parameters can be set to a negative value

How to reproduce:
1. Open the attached project "VFXAET"
2. Open the "SampleScene" scene and a "New VFX" VFX Graph
3. Set the VFX target to "GameObject"
4. Open the Graph Debug Information tab
5. Navigate to the "GPU Time Threshold" under the VFX Graph Heatmap
6. Try setting the field value to a negative number

Expected results: The field can't be set to a negative number
Actual results: The field can be set to a negative number

Reproducible with: 6000.0.55f1, 6000.1.15f1, 6000.2.0f1, 6000.3.0a4

Reproducible on: macOS Sequoia 15.5 (M1)
Not reproducible on: No other environment tested