🐛 Add a reject for publication_status

There seems to be a bigger issue going on where some fields are getting
`['']` as a value.  This is a quick fix to prevent the view from bugging
out when it encounters this.

app/views/records/show_fields/_publication_status.html.erb

@@ -1,2 +1,2 @@
 <% ps_service = AuthorityService::PublicationStatusesService.new %>
-<%= record.publication_status.map { |ps| ps_service.label(ps) }.join('<br />').html_safe %>
+<%= record.publication_status.reject(&:blank?).map { |ps| ps_service.label(ps) }.join('<br />').html_safe %>