tests(ticdc): fix unstable cdc daily tests

[3AceShowHand]

What problem does this PR solve?

Issue Number: close #xxx

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Check List

Tests

• Unit test
• Integration test
• Manual test (add detailed scripts or steps below)
• No code

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[3AceShowHand]

/retest

[3AceShowHand]

This may caused by the tikv issue tikv/tikv#18017, cannot be reproduced after it fixed, so close this