Resolve unknown status from Add activity, skip Remove if unknown (#7526)

Fix #7518

app/lib/activitypub/activity.rb

@@ -118,4 +118,13 @@ class ActivityPub::Activity
   def delete_later!(uri)
     redis.setex("delete_upon_arrival:#{@account.id}:#{uri}", 6.hours.seconds, uri)
   end
+
+  def fetch_remote_original_status
+    if object_uri.start_with?('http')
+      return if ActivityPub::TagManager.instance.local_uri?(object_uri)
+      ActivityPub::FetchRemoteStatusService.new.call(object_uri, id: true, on_behalf_of: @account.followers.local.first)
+    elsif @object['url'].present?
+      ::FetchRemoteStatusService.new.call(@object['url'])
+    end
+  end
 end