core (message): fix calling of post treatments during message workflow

libervia/backend/core/xmpp.py

@@ -1365,6 +1365,9 @@ class SatMessageProtocol(xmppim.MessageProtocol):
             return
         try:
             data = self.parse_message(message_elt)
+            # we now do all post treatments added by plugins
+            post_treat.callback(data)
+            await post_treat
 
             self.complete_attachments(data)
             if not data["message"] and not data["extra"] and not data["subject"]: