Reference to a deleted GameObject becomes "None" when the GameObject is restored with undo after entering and exiting Play Mode

Reproduction steps:
1. Open the attached “repro_IN-92211” project
2. Open the “Assets/Issue Samples/Sample 1/Scenes/Sample 1.unity“ Scene
3. In the Hierarchy, delete the “room (3)“ GameObject (child of the “Rooms“ GameObject)
4. Enter the Play Mode
5. Exit the Play Mode
6. Undo until the “room (3)“ GameObject is restored in the Hierarchy
7. Select the “TestingClass1“ GameObject
8. In the Inspector, expand the “My List“ dropdown
9. Observe the “Element 3“ parameter field

Expected result: It shows “room (3) (Room)”
Actual result: It shows “None (Room)“

Reproducible with: 2021.3.47f1, 2022.3.56f1, 6000.0.34f1, 6000.1.0b2

Reproducible on: Windows 10 (22H2)
Not reproducible on: No other environments tested