Default to showing recommendations for logged out users

src/invidious.cr

@@ -1146,7 +1146,7 @@ post "/preferences" do |env|
     captions = [captions_0, captions_1, captions_2]
 
     related_videos = env.params.body["related_videos"]?.try &.as(String)
-    related_videos ||= "on"
+    related_videos ||= "off"
     related_videos = related_videos == "on"
 
     redirect_feed = env.params.body["redirect_feed"]?.try &.as(String)

src/invidious/views/watch.ecr

@@ -141,7 +141,7 @@
             </div>
         </div>
     </div>
-    <% if preferences && preferences.related_videos || plid %>
+    <% if !preferences || preferences && preferences.related_videos || plid %>
     <div class="pure-u-1 pure-u-md-1-5">
         <% if plid %>
         <div id="playlist" class="h-box">