Remove Reference Object button is unclear for XR Reference Object Library in Inspector window

Steps to reproduce:
1. Create new Unity project using VR Template
2. In Project window create Reference Object Library Asset (Create > XR > Reference Object Library)
3. Select Reference Object Library Asset in Project window
4. In Inspector window press “Add Reference Object”
5. Observe the empty button on right, next to empty “Name” field 

Actual results: button function is unclear that it will remove Reference Object

Expected results: button function should be cleared or button should be shaded to kebab menu with “Remove” element

Reproducible with versions: 1.15.1 (6000.0.61f1, 6000.2.10f1), 1.16.0-pre.2 (6000.3.0b8, 6000.4.0a3)

Tested on (OS): macOS Silicon, Tahoe 26.0 (M1)