Public views do not filter posts by date_published_end (Expired posts are visible)

[veliluukkonen]

I noticed that the public list views (PostListView, CategoryListView, etc.) display posts that have passed their expiration date (date_published_end).

Looking at views.py, the BaseConfigListViewMixin.get_queryset method filters by language and app config, but it ignores the publication window dates (date_published and date_published_end) for non-staff users.

Expected behavior: Expired posts (where date_published_end is in the past) should not be visible to public users / unauthenticated visitors.

Suggested fix in views.py: Update BaseConfigListViewMixin.get_queryset to include a check for publication dates when the user is not staff.