Sidebar Minimized missing scroll on sidebar items

[AdnanBoota]

Hello,

Thanks for the wonderful library, it has been very helpful in our projects.

This issue is referred to the coreui-react #145, as both repositories have <CSidebar /> so i'm not sure where it is related.

We just realized that, with the latest of version of coreui-react, when the sidebar is minimized with property <CSidebar minimize={true} > the scrollbar is not available. It is not possible to see all the items when the sidebar is minimized, as there is no scroll option available.

Could you please activate the scrollbar for the <CSidebar minimize={true} > ?

Thanks a lot, attached is the image for your reference.

[woothu]

duplicate of #145, please do not open multiple issues