d8a9bcea6c
When showing an action data-block added to a library overridden object in the Graph Editor, the visibility toggles would be disabled. Toggling the visibility should be possible still and works with the shortcuts, just the button was incorrectly disabled. Also added the usual disabled hint for the tooltip. Differential Revision: https://developer.blender.org/D14568 Reviewed by: Bastien Montagne