Locked properties are not retained when refreshing Sprite Editor window

Steps to reproduce:

1. Create a new 2D project
2. Go Assets > Create > 2D > Sprites > Triangle
3. Select it and click "Open Sprite Editor"
4. In the Sprite Editor, click on the lock (Toggle Sprite Editor locks.) icon
5. Lock any item
6. Close Sprite Editor
7. Re-open Sprite Editor and observe the locks

Actual results: Locked properties are not retained and are editable again

Expected results: Locked properties are retained and still locked

Reproducible with versions: 6000.3.19f1, 6000.5.3f1, 6000.6.0b2, 6000.7.0a2

Can’t test with versions: 6000.0.79f1 (lock not available)

Tested on (OS):  Ubuntu 24.04, macOS 26.5

Notes:

• This also reproduces when making any change and clicking "Apply" in the Sprite Editor. This is a usability concern since saving changes silently resets the user's locked properties