Fix related video bar for users that aren't logged in

src/invidious/views/watch.ecr

@@ -116,7 +116,7 @@
         </div>
     </div>
     <div class="pure-u-1 pure-u-md-1-5">
-        <% if preferences && preferences.related_videos %>
+        <% if !preferences || preferences && preferences.related_videos %>
         <div class="h-box">
         <% rvs.each do |rv| %>
             <% if rv.has_key?("id") %>