Cancelling nested changes via the change children pop-up still applies said changes in the Hierarchy window

Steps to reproduce:

1. [HierarchyV2] Cancelling nested changes via change children pop-up still applies said changes in the Hierarchy window
2. Open the attached project
3. Open the TestScene
4. Select 'GameObject'
5. Change the Object's Layer via the Hierarchy panel
6. In the Change Layer pop-up, press the Cancel button

Actual results: GameObject's layer is changed in the Hierarchy window

Expected results: Pending changes are cancelled

Reproducible with versions: 6000.3.0b2

Can’t test with versions: 6000.3.0a1 and earlier (Hierarchy V2 not available), 6000.3.0a2, 6000.3.0b1 (Pop-up for applying changes to object's children was not available due to another issue)

Tested on (OS): macOS 15.6.1

Notes:

• Changes that are applied after pressing the Cancel button are only visible in the Hierarchy window. The Inspector window shows the correct layer after cancelling the operation.