"Listing" pages should show unpublished items when viewed as a preview

[jmurty]

This is a conceptual rather than a technical issue, but I am strongly of the view that the various listing pages (e.g. Author Listing) should show draft items (Authors) when viewed as a preview.

Currently this does not happen, and when you view a listing page in preview mode only published items are listed not draft items.

You can "mount" (navigate to) draft items as children of the listing page in preview mode if you know their slug and enter it manually, but cannot see them otherwise.

I believe this separate between items you can see (published only) and items you can mount (draft and published) is confusing and wrong.