DPE-7726: Fixup logs polishing

Author: taurus-forever

src/charm.py

@@ -1621,7 +1621,7 @@ def _restart_metrics_service(self, postgres_snap: snap.Snap) -> None:
         try:
             snap_password = postgres_snap.get("exporter.password")
         except snap.SnapError:
-            logger.warning("Early exit: Trying to reset metrics service with no configuration set")
+            logger.warning("Early exit: skipping exporter setup (no configuration set)")
             return None
 
         if snap_password != self.get_secret(APP_SCOPE, MONITORING_PASSWORD_KEY):