How to reproduce:
1. Open the user-attached project "InspectorETHDRP"
2. In the Project window, select the "PrefabVariant" Asset
3. Add any Component to the Prefab Variant in the Inspector
Expected results: The Component is not highlighted as a change and there is no plus symbol next to the Component icon
Actual results: The Component has a blue highlight and a plus symbol near the icon even though it can't be applied
Reproducible with: 2021.3.43f1, 2022.3.44f1, 6000.0.18f1
Reproducible on: Windows 11 Pro
Not reproducible on: No other environment tested