[Bug] After consumerGroup is updated and redeployed, an extra + appears in the results

[cvictory]

Before Creating the Bug Report

• I found a bug, not just asking a question, which should be created in GitHub Discussions.

• I have searched the GitHub Issues and GitHub Discussions of this repository and believe that this is not a duplicate.

• I have confirmed that this bug belongs to the current repository, not other repositories of RocketMQ.

Runtime platform environment

Any

RocketMQ version

Master branch

JDK Version

Any

Describe the Bug

when consumerGroup is updated and redeploy, an extra + appears in the results. The result is that all previously written attributes become invalid, So I must update the attribute again.

Steps to Reproduce

1. start broker
2. update consumerGroup with attribute A
3. redeploy
4. the attribute A not valid
5. when you update consumerGroup with attribute A. In the broker log, it has two attribute: one is A, one is +A .

What Did You Expect to See?

The update works well

What Did You See Instead?

Work well

Additional Context

No response