`*Viewer` classes can only reduce size by 1px per draw

## Steps to reproduce
1. Add an `AttributeViewer` or `AbilitySystemViewer` to a scene
2. Hook up the viewer node to an ability system, and make sure it has some data
3. Set the viewer anchors to the full preset
4. Set the viewer anchors to the top left preset
5. Try to change the `size.x` of the viewer node