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

all

RocketMQ version

latest

JDK Version

11

Describe the Bug

Timing metrics will not be cleaned when topics are deleted.
it's because that the cleanMetrics task is not started.

Steps to Reproduce

create topic, send timing msg, then delete the topic, you will see that metric will not be cleaned.

What Did You Expect to See?

the timing metrics should be cleaned.

What Did You See Instead?

create topic, send timing msg, then delete the topic, you will see that metric will not be cleaned.

Additional Context

No response