fix setTxnidMostBits bug (apache#5743)

In TypedMessageBuilderImpl::beforeSend function, when setting TxnIdMostBits field of msgMetadataBuilder, it sets into TxnidLeastBits field and override the original TxnIdLeastBits value.

pulsar-client/src/main/java/org/apache/pulsar/client/impl/TypedMessageBuilderImpl.java

@@ -73,7 +73,7 @@ private long beforeSend() {
             return -1L;
         }
         msgMetadataBuilder.setTxnidLeastBits(txn.getTxnIdLeastBits());
-        msgMetadataBuilder.setTxnidLeastBits(txn.getTxnIdMostBits());
+        msgMetadataBuilder.setTxnidMostBits(txn.getTxnIdMostBits());
         long sequenceId = txn.nextSequenceId();
         msgMetadataBuilder.setSequenceId(sequenceId);
         return sequenceId;