owner(ticdc): correctly handle the state after the old owner is upgraded to the new owner

[Rustin170506]

What problem does this PR solve?

part of https://github.com/pingcap/ticdc/issues/3473

What is changed and how it works?

correctly display the status of the old owner's paused tasks.

Check List

Tests

• Manual testing
• Test infra testing?
• unit tests

Code changes

None

Side effects

None
Related changes

• Need to cherry-pick to the release branch

Release note

Fix the problem of changefeed resuming automatically after upgrading cluster

[ti-chi-bot]

[REVIEW NOTIFICATION]

This pull request has been approved by:

• overvenus

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[Rustin170506]

/hold

Waiting for test.

[Rustin170506]

/run-all-tests

[Rustin170506]

/cc @liuzix @overvenus

Could you please take a look? Thanks! 💚 💙 💜 💛 ❤️

[Rustin170506]

/run-all-tests

[liuzix]

Can we have integration tests for this?

[Rustin170506]

Can we have integration tests for this?

I will try to add a test case on test-infra.

[overvenus]

LGTM

[Rustin170506]

/hold

I'll probably write a better solution. See https://docs.google.com/document/d/1ex7PQ8AWtdpFf5VMJ9-TMdk4xM5m1S68tkP6aKYHR60/edit#heading=h.rtyrqbrdc0zd for a specific discussion (in Chinese).