fix(context_drawer): remove content padding

This is so that the scrollbar can be at the edge of the context drawer.
Apps will need to specify this padding for everything that goes below the header (if using a scrollable, it should be applied before the scrollable).

src/widget/context_drawer/widget.rs

@@ -67,7 +67,6 @@ impl<'a, Message: Clone + 'static> ContextDrawer<'a, Message> {
 
         let pane = column::with_capacity(2).push(header).push(
             container(drawer.into())
-                .padding([0, space_l, space_l, space_l])
                 .height(Length::Fill)
                 .width(Length::Shrink),
         );