galactic_post_view_article.php: fix hidden articles
galactic_post_view_article.php: fix hidden articles

Articles were being hidden from the viewing list if they shared an
`article_id` with an article that was added to a paper in another
game. Now we properly restrict the suppression to the current game.

smrealms/smr,hemberger/smr,hemberger/smr,hemberger/smr,smrealms/smr,smrealms/smr,hemberger/smr