[4.3] Unpublish article when saving as copy

[Hackwar]

Summary of Changes

In J3 when saving an article as copy, the article was automatically unpublished. When introducing the workflow in August 2018, the line from this PR was removed and never returned. This means that articles, which are saved as a copy, that article is directly published. I hope that this is fixing an issue and not intentional. But I definitely want to hear the opinion from @bembelimen about this.

Testing Instructions

1. Save an article as a copy. The new copy is directly published.
2. Apply patch.
3. Save an article as a copy. The new copy is unpublished.