Process inbound Delete activities at lowest priority

lib/pleroma/web/federator.ex

@@ -43,6 +43,10 @@ def incoming_ap_doc(%{params: params, req_headers: req_headers}) do
     )
   end
 
+  def incoming_ap_doc(%{"type" => "Delete"} = params) do
+    ReceiverWorker.enqueue("incoming_ap_doc", %{"params" => params}, priority: 3)
+  end
+
   def incoming_ap_doc(params) do
     ReceiverWorker.enqueue("incoming_ap_doc", %{"params" => params})
   end