Comment 3 for bug 1387858

I think it would avoid the most confusion if we prevent users from selecting a Draft journal entry in the first place. However, we do have to address the fact that a user can select a journal entry and then unpublish it, leaving a journal entry block with a draft journal entry selected.

So the full solution would be something like this:

1. In the artefact selector for the journal entry block, we prevent the user from selecting any Draft journal entries

2. AND if they select a Published journal entry, and then change that entry back to Draft later, we no longer display the journal entry's content in the block.

2a. Instead we show a placeholder that says something like "This journal entry has not yet been published."

2b. We should show that same placeholder to the journal owner themselves, as well. That'll make it crystal clear to them that the entry is not visible. Maybe we also give them a link to the journal entry's artefact page so that they can publish it there.