Push discovered status through streaming API within a time window (#6484)

Time window of 6 hours

app/lib/activitypub/activity.rb

@@ -74,7 +74,7 @@ class ActivityPub::Activity
 
     # Only continue if the status is supposed to have
     # arrived in real-time
-    return unless @options[:override_timestamps]
+    return unless @options[:override_timestamps] || status.within_realtime_window?
 
     distribute_to_followers(status)
   end