Missing post subcategory filter menu

[corywatilo]

In our current posts layout, we have a convention for showing tags/subcategories:

But it looks like this is only showing when visiting directly from something like the blog (Company → Blog → [open a post] → See filter dropdown (or when visiting a blog post directly).

If you go to Posts → Blog, it doesn't show the filters:

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Additionally, we lost tutorial subcategories at some point in the posts section updates.

They're directly accessible here: https://posthog.com/tutorials/categories/site-apps but judging by the Latest | Popular toggle in the top right, this looks like a relic from a previous era. But in this layout, you'll see useful categories and subcategories:

We are missing this from the posts layout:

Two options:

1. Use the existing filters dropdown convention to show these "sub"categories
2. Use the expandable nav items (from the old version) like we use in docs/handbook/etc