The `?tab=upload` page still exists for no-js support and for users who may
access it directly (e.g. from bookmarks or history) or plugins doing the same.
In this page, the "Browse plugins" link should always behave like a link.
Fixes#35429.
Built from https://develop.svn.wordpress.org/trunk@37681
git-svn-id: http://core.svn.wordpress.org/trunk@37647 1a063a9b-81f0-0310-95a4-ce76da25c4cd