Menu - ability to make group titles sticky #7367

Requested on the patternfly slack:

Hey PF team. I am working on a design that has a grouped option menu (PF component - Titled groups of items).

There is a pain point in a long list of options: When users scroll to an option, they may have no clue of knowing which group the option belongs to, because the group name has been slipped out of sight.

In order to clearly identify the group where each option is located, is it possible to pin the corresponding group name at the top when sliding to options in a group? This way, no matter which option to slide to, the user can always identify the group by the top group name.

I attached a short video as an example. I knew this is not a PF standard component so far. But I am curious about if we can support the similar thing? Thanks!

This will require #7256 as grouped menus are not currently scrollable.