The Animator window is flickering when a new Layer is added without finishing renaming and clicking on the nodes/states in the Animator

Steps to reproduce:

1. Create a new Unity project using the Universal 3D template
2. Open the Animation window (Window > Animation > Animation)
3. Dock the Animation window
4. Select any GameObject in the Hierarchy
5. Create a new Animation in the Animation window
6. Open the Animator window (Window > Animation > Animator)
7. Dock the Animator window
8. Click the "+" button to create a new Layer but do not finish the renaming
9. Repeatedly click on "Any State" and "Entry" nodes/states
10. Observe the Animator window

Actual results: The Animator window is flickering with each click

Expected results: The Animator window is not flickering

Reproducible with versions: 6000.6.0a5, 6000.6.0a7

Not reproducible with versions: 6000.0.77f1, 6000.3.18f1, 6000.4.12f1, 6000.5.1f1, 6000.6.0a4

Tested on (OS): MacOS Silicon Tahoe 26.3