test(ticdc): fix data inconsistence on integration_tests (#11584)

[ti-chi-bot]

This is an automated cherry-pick of #11584

What problem does this PR solve?

Issue Number: close #11583 ref #11368

What is changed and how it works?

remove rows before add column xxx default now();

Check List

Tests

• Integration test

Questions

Will it cause performance regression or break compatibility?

Do you need to update user documentation, design documentation or monitoring documentation?

Release note

`None`.

[ti-chi-bot]

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[ti-chi-bot]

@ti-chi-bot: The following test failed, say /retest to rerun all failed tests or /retest-required to rerun all mandatory failed tests:

Test name	Commit	Details	Required	Rerun command
jenkins-ticdc/verify	cdf7baa	link	true	/test verify

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