Skip recorder commit if there is nothing to do (#49614)

homeassistant/components/recorder/__init__.py

@@ -666,6 +666,9 @@ class Recorder(threading.Thread):
         return False
 
     def _commit_event_session_or_retry(self):
+        """Commit the event session if there is work to do."""
+        if not self.event_session.new and not self.event_session.dirty:
+            return
         tries = 1
         while tries <= self.db_max_retries:
             try: