reset listener

Author: CodingCat

client-spark/spark-3/src/main/java/org/apache/spark/shuffle/celeborn/SparkShuffleManager.java

@@ -274,6 +274,7 @@ public void stop() {
       _sortShuffleManager.stop();
       _sortShuffleManager = null;
     }
+    ListenerHelper.reset();
   }
 
   @Override