[Bug][Sort] The metricGroup has one default group named "user"

[Oneal65]

What happened

Now, Kafka metric computing is just Kafka record, but record can be unpacked. We should compute unpacked data.
And, Kafka metric name is not right. We expect metric name is flink_taskmanager_job_task_operator_groupId_streamId_nodeId_numRecordsIn, but metric name is flink_taskmanager_job_task_operator_user_groupId_streamId_nodeId_numRecordsIn

What you expected to happen

metric result is right and metric name is right
the similar issue is: #5762

How to reproduce

just test inlongmsg format

Environment

No response

InLong version

master

InLong Component

InLong Sort

Are you willing to submit PR?

• Yes, I am willing to submit a PR!

Code of Conduct

• I agree to follow this project's Code of Conduct

[github-actions]

This issue is stale because it has been open for 60 days with no activity.