fix tab style (#706)

This fixes an issue that @hydra was experiencing with styling on tabs. It appears that sequential tabs receive the inherited properties of previous tabs.

This was happening because there was an early return in style_view without restoring

src/context.rs

@@ -541,6 +541,7 @@ impl<'a> StyleCx<'a> {
         {
             let mut view_state = view_state.borrow_mut();
             if !view_state.requested_changes.contains(ChangeFlags::STYLE) {
+                self.restore();
                 return;
             }
             view_state.requested_changes.remove(ChangeFlags::STYLE);