Platform-specific overrides panel for Sprite Atlas asset does not support Undo or Redo operations

Steps to reproduce:

1. Open the attached project
2. Select the TestSpriteAtlas asset
3. In the Inspector window, modify the Read/Write settings flag
4. Perform an Undo action - the Read/Write settings flag will be reset as expected
5. In the Inspector window, modify the Max Texture Size setting
6. Perform an Undo action again

Actual results: Changes to settings inside the Platform-specific overrides panel are not registered for undo/redo actions. Trying to Undo the change will deselect the Sprite Atlas asset

Expected results: Changes to settings inside the Platform-specific overrides panel are registered for undo/redo actions.

Reproducible with versions: 6000.0.83f1, 6000.3.24f1, 6000.5.11f1, 6000.6.0f1, 6000.7.0a6

Tested on (OS): macOS 26.6.2

Notes:

• The issue does not occur for Sprite assets. If the same steps are repeated after selecting the Circle sprite asset instead of the Sprite Atlas asset, the Undo action will be performed as expected