How to reproduce:
1. Open the attached project "PrefabUtilityLoadPrefabContentsHang.zip"
2. Rename Assets/MonitoredFolder/RenameMeToFreezeTheEditor.prefab to "a"
Expected results: The Prefab is renamed to "a"
Actual results: The Editor freezes
Reproducible with: 2022.3.12f1, 2023.1.18f1, 2023.2.0b15, 2023.3.0a2, 2023.3.0a11
Not reproducible with: 2021.3.31f1, 2023.2.0a23
Reproducible on: Windows 11 22H2
Not reproducible on: No other environment tested