chore: update debug log for signal processing from event bus

Co-authored-by: Tim McCormack <tmccormack@edx.org>

openedx_events/apps.py

@@ -24,7 +24,7 @@ def general_signal_handler(sender, signal, **kwargs):  # pylint: disable=unused-
     #        "topic_b": { "event_key_field": "my.key.field", "enabled": False }
     # }"
     if kwargs.get(SIGNAL_PROCESSED_FROM_EVENT_BUS) is True:
-        logger.debug(f"Signal already processed on the Event Bus {signal.event_type}, skipping...")
+        logger.debug(f"Declining to send signal to the Event Bus since that's where it was sent from: {signal.event_type} (preventing recursion)")
         return
 
     event_data = {key: kwargs.get(key) for key in signal.init_data}