owner, metrics(ticdc): fix metrics (#10459) #10513
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This is an automated cherry-pick of #10459
What problem does this PR solve?
Issue Number: close #10449, close #10447, close #10438
What is changed and how it works?
For ticdc not delete ticdc_owner_status metrics when removing changefeed #10449, always cleanup metrics whether the changefeed has been cleaned or not.
For [CDC] Distinguish dataflow metrics between incremental scan and normal raft logs #10447, use the type of ticdc_kvclient_pull_event_count to distinguish incresmental scan and real-time raft log.
For Add create time metric for every changefeed #10438, add changefeedStartTimeGauge metric, which record the changefeed create time and restart time. Note that changefeedStartTimeGauge records the physical time with millisecond precision.
Check List
Tests
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Will it cause performance regression or break compatibility?
Do you need to update user documentation, design documentation or monitoring documentation?
Release note