[I] [Bug] MessageBatch 自定义属性值丢失问题 [rocketmq]

[via GitHub]

Sunw730 opened a new issue, #9195:
URL: https://github.com/apache/rocketmq/issues/9195

   ### Before Creating the Bug Report
   
   - [x] I found a bug, not just asking a question, which should be created in 
[GitHub Discussions](https://github.com/apache/rocketmq/discussions).
   
   - [x] I have searched the [GitHub 
Issues](https://github.com/apache/rocketmq/issues) and [GitHub 
Discussions](https://github.com/apache/rocketmq/discussions)  of this 
repository and believe that this is not a duplicate.
   
   - [x] I have confirmed that this bug belongs to the current repository, not 
other repositories of RocketMQ.
   
   
   ### Runtime platform environment
   
   生产端：Windows11
   消费端：Windows11
   服务端：CentOS Linux 7 (Core)
   
   ### RocketMQ version
   
   生产端/消费端：org.apache.rocketmq:rocketmq-client:4.7.1
   服务端：rocketmq server 4.7.1
   
   ### JDK Version
   
   OpenJDK：zulu-11
   
   ### Describe the Bug
   
   生产端发送批量消息 MessageBatch 时，通过 putUserProperty 方法设置了属性值（内部的 List<Message> 
都设置了相同的属性值），
   消费端接收到的消息中没有获取到自定义的属性值。
   
   ### Steps to Reproduce
   
   1. 生产端：
   ```java
   // step 1
   messageBatch.putUserProperty("name", "value");
   messageBatch.forEach(message -> message.putUserProperty("name", "value"));
   producer.send(messageBatch);
   ``` 
   
   2. 消费端：
   ```java
   consumer.registerMessageListener((MessageListenerConcurrently) (messages, 
context) -> {
       messages.forEach(message -> {
           // step 2
           System.out.println(message.getUserProperty("name"));
       });
   });
   ```
   
   ### What Did You Expect to See?
   
   我希望 step 2 能输出字符串 `value`
   
   ### What Did You See Instead?
   
   目前 step 2 处实际输出的是 `null`
   
   ### Additional Context
   
   _No response_


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