Animator window breaks with errors when undoing a settings change and a reordering

Steps to reproduce:

1. Create and open a new project
2. Create an Animation Controller Asset
3. Open it in Animator
4. Add another layer "New Layer"
5. Move the new layer up
6. Immediately after, press on the cog on the "Base Layer" and change any setting (notice the selection reset back to the "Top")
7. Undo a few times
8. Observe the Animator and Console

Actual results: Animator window breaks and MissingReferenceExceptions are thrown

Expected results: Animator handles the undo correctly

Reproducible with versions: 2023.1.0a10, 6000.0.73f1, 6000.3.14f1, 6000.4.5f1, 6000.5.0b6, 6000.6.0a3

Tested on (OS): Windows 11 Pro (25H2)

Notes:

• The cause is likely due to the selection change without creating an undoable event