[Enhancement] Optimize the metric calculation logic of the time wheel

[3424672656]

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

Centos

RocketMQ version

develop

JDK Version

11

Describe the Bug

In each round of fetching an element, each element's message is a type, each message is addmetric() logic, the metric will fluctuate, but the final result is correct, after optimization only need to do addmetric once

Steps to Reproduce

Use arrays for correct calculations for each round of placement

What Did You Expect to See?

metric is correctly

What Did You See Instead?

metric is incorrectly

Additional Context

No response