Update entire CImageTreeModel table on compression finish.

The images table now does not update all of its contents when compression finishes. It redraws only when you put a cursor over it (1st video). I propose a quick fix, to emit dataChanged on compression finish. 2nd video demonstrates that the issue is gone. Before fix: https://github.com/user-attachments/assets/0e1ca118-06cd-4cea-93e3-79ac1c2d38d8 After fix: https://github.com/user-attachments/assets/d2844394-e5a5-4766-ab3a-fb94f2201ddd