QUICK FIX: Compatibility Window Checkbox Spacing

This issue is not visible on macOS. This fix is for Windows users who use the new UI.

After properly nesting the checkbox in the previous UI Updates batch, the distance between the checkbox and the window controls (close, minimise, expand) in the compatibility window was so small that they overflowed on top of each other.

macOS doesn't show this issue because of the different window control locations.

The old UI on Windows doesn't experience this behaviour, as the window controls are physically above (not inline) with the checkbox and the label.