How to reproduce:
1. Open the attached project "My project.zip"
2. Open Window>UI Toolkit>UI Builder
3. Select #input-icon-container in the UI Builder Hierarchy
Expected results: Attributes editing in the UI Builder Inspector is not greyed out
Actual results: Attributes editing in the UI Builder Inspector is greyed out
Reproducible with: 2021.3.34f1, 2022.3.17f1, 2023.2.4f1, 2023.3.0b1
Reproducible on: Windows 11 22H2
Not reproducible on: No other environment tested