make sure messages are marked as read before they get handled

src/remember_remember_bot/loop.py

@@ -19,8 +19,8 @@ def loop(ac: deltachat.Account):
     print(f"Selected {admin_chat.get_name()} as admin chat")
     while True:
         for msg in ac.get_fresh_messages():
-            handle_incoming_message(msg, ac)
             msg.mark_seen()
+            handle_incoming_message(msg, ac)
         time.sleep(3)