“Keys” and “Values” lists in the Adaptive Performance General Settings have “+“ buttons that are active but do nothing when clicked

Steps to reproduce:

1. Create a new Unity project using the Universal 3D template
2. Open the Project Setting window (Edit > Project Settings)
3. Open the Adaptive Performance tab
4. Enable Adaptive Performance
5. Select the "Assets/Adaptive Performance/AdaptivePerformanceGeneralSettings.asset" asset in the Project window
6. Open the "Keys" foldout in the Inspector window
7. Click the "+" button
8. Observe the "Keys" list

Actual results: Nothing happens

Expected results: The "+" buttons should be deactivated if they don't have any functionality

Reproducible with versions: 6000.3.7f1, 6000.4.0b7, 6000.5.0a6

Can’t test with versions: 6000.0.66f1 (due to Adaptive Performance General Settings not having anything interactable)

Tested on (OS): MacOS Silicon Tahoe 26.2