*Steps to reproduce:*
# [HierarchyV2] Cancelling nested changes via change children pop-up still applies said changes in the Hierarchy window
# Open the attached project
# Open the TestScene
# Select 'GameObject'
# Change the Object's Layer via the Hierarchy panel
# 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.