Describe the feature

Hello,

I would like to keep MenubarContent mounted when hidden, however unmountOnHide prop is not present on MenubarRoot.

Would it be possible to add unmountOnHide to the MenubarRoot, PopoverRoot and DropdownMenuRoot, same as for NavigationMenuRoot?

Thank you in advance!

Additional information

• I intend to submit a PR for this feature.
• I have already implemented and/or tested this feature.