"Trying to access the DPI setting of a visual element that is not on a panel." warning is thrown when adding a Behaviour to the Animator's "Base Layer" with Hierarchy V2 enabled

Steps to reproduce:

1. Create a new Unity project using the Universal 3D template
2. Make sure Hierarchy V2 is enabled (Unity > Settings > General > Use new Hierarchy window)
3. Create a new Cube GameObject (GameObject > 3D Object > Cube)
4. Select the newly created Cube GameObject in the Hierarchy window
5. Open the Animation window (Window > Animation > Animation)
6. Create a new Animation
7. Open the Animator window (Window > Animation > Animator)
8. Click somewhere in an empty spot in the Animator window to select the "Base Layer"
9. Click the "Add Behaviour" button
10. Enter any Behaviour Script name ("Asd" for example) and create the script
11. Observe the Console window

Actual results: "Trying to access the DPI setting of a visual element that is not on a panel." warning is thrown

Expected results: No errors or warnings are thrown

Reproducible with versions: 6000.3.7f1, 6000.4.0b7, 6000.5.0a6

Not reproducible with versions: 6000.5.0a5

Can’t test with versions: 6000.0.67f1 (due to no Hierarchy V2)

Tested on (OS): MacOS Silicon Tahoe 26.2, Ubuntu 24.04

Notes:

• Only reproduces with Hierarchy V2 enabled