Fixed problem that stemmed from this fix: https://github.com/johnshopkins/jhu.edu/commit/1ec8bde66b75ace0d5ab96876574e413429bad87#diff-d67b71d8ecc26fbb24692efb3ea1403a

We need to manually get all the content types and not rely on
WP_Query knowing what "any" content type means. If we do that, it
will only bring back public content types, which does not include
our custom post types.