message: Fix check to affix nav
diff: Don't affix the nav on download pages.
  It takes a lot of space out vertically when on small browser size.
  -->
  - <!--:should-affix-nav="!$state.includes( 'discover.games.view.download' )"-->
  <app-page-header
  :cover-media-item="game.header_media_item"
  + :should-affix-nav="$route.name !== 'discover.games.view.download'"
  >
  <!--<div
  