message: fix touchzone for modal page header buttons in ios
diff: .ModalPageHeader--ios .ModalPageHeader__left .PanelHeaderButton .Icon--24 {
  padding-left: 12px;
  + padding-right: 12px;
  }
  .ModalPageHeader--ios .ModalPageHeader__left .PanelHeaderButton--primitive {
  }
  .ModalPageHeader--ios .ModalPageHeader__right .PanelHeaderButton .Icon--24 {
  + padding-left: 12px;
  padding-right: 12px;
  }
  