[ML] Fix solution for preventing race conditions between timeout and completion (apache#10740)

- solution was added in apache#4455

Author: lhotari

managed-ledger/src/main/java/org/apache/bookkeeper/mledger/impl/OpAddEntry.java

@@ -253,7 +253,7 @@ private void updateLatency() {
      */
     private boolean checkAndCompleteOp(Object ctx) {
         long addOpCount = (ctx instanceof Long) ? (long) ctx : -1;
-        if (addOpCount != -1 && ADD_OP_COUNT_UPDATER.compareAndSet(this, this.addOpCount, -1)) {
+        if (addOpCount != -1 && ADD_OP_COUNT_UPDATER.compareAndSet(this, addOpCount, -1)) {
             return true;
         }
         log.info("Add-entry already completed for {}-{}", ledger != null ? ledger.getId() : -1, entryId);