Keep OffCanvas nodes in DOM

[flipchart]

Is your feature request related to a problem? Please describe

When OffCanvas closes, it removes the nodes from the DOM rather than hiding them. This means that any children of OffCanvasBody are unmounted (which has an impact for me).

Describe the solution you'd like

I'd like OffCanvas to stay in the DOM but just be hidden, or at least have an option to do so

Describe alternatives you've considered

Tried using createPortal, which almost works, but when switching the target of the portal from the OffCanvasBody to some other node, the children are unmounted/remounted which produces the same problem for me

Additional context

No response