List Elements are not marked/switched to bold text when reordering the Elements in a List on a Prefab

Steps to reproduce:

1. Create a new Unity project using the Universal 3D template
2. Import the provided "ScrollBarsTestComponent" script into the Assets folder
3. Create a new Empty GameObject in the Hierarchy
4. Attach the ScrollBarsTestComponent" script to the created GameObject
5. Click and drag the GameObject to the Project window to make it into a Prefab
6. Select the GameObject in the Hierarchy
7. Open the "Long List" foldout in the Inspector
8. Reorder Element 0 and Element 1
9. Observe the List

Actual results: List Elements are not marked/switched to bold text when reordering the Elements in a List on a Prefab

Expected results: List Elements are marked/switched to bold text

Reproducible with versions: 6000.0.81f1, 6000.3.21f1, 6000.5.7f1, 6000.6.0b7, 6000.7.0a4

Can’t test with versions: 6000.0.0f1 (cant test due to crashing)

Tested on (OS): MacOS Silicon Tahoe 26.5.1

Notes:

• The elements are updated and marked/switched to bold text when another update happens in the list after the reproduction steps (list is reopened, element value changes, etc.), but the elements do not update without an extra change