Allow any page to show recent subpages

I really like how top-level documents show a widget of subpages that were recently edited. That's a great mechanic for helping people discover new stuff that's been updated! Sadly, it seems to be only available at the top level of Collectives.

Describe the solution you'd like
I think a straightforward way to do this is to offer some kind of embed code that can sit in a template or page. Even if it's just a shortcode, like [[recent_pages]], that could be really useful for those of us who are effectively building miniature internal wikis in Nextcloud.

Describe alternatives you've considered
A more elaborate way of thinking about the problem may be to take the route that AnyType takes: shift to a structure where Pages can be represented as different kinds of structured objects (Person, Project, Organization, Species, whatever) with an internal constructor for any kind of data structure desired.

Obviously, that's a tall order and probably a lot of abstract work for non-obvious payoff, but the result is a kind of polymorphic database/wiki thing that can be structured to whatever needs an organization has.

Additional context
For my organization (We Distribute) our internal Nextcloud infrastructure is being built around various needs for research, fact-checking, discovery, and collaboration. As an independent news organization dedicated to promoting news of Fediverse development, this kind of shared knowledgebase for our organization as well as outside contributors is vital.

We really like AnyType, but I'm personally pushing for a tool that integrates with the infrastructure we already have. It doesn't necessarily have to be the crazy second thing I described, but a little more flexibility with widgets in pages and templates could be a huge deal.

Start by examining the existing top-level recent-subpages widget and how pages or templates currently render reusable content; the issue names no files or tests. Define the supported page and template scope, then verify that recent subpages can be displayed outside the top level and that the requested widget behavior is covered.