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

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]

This cherry pick PR is for a release branch and has not yet been approved by triage owners.
Adding the do-not-merge/cherry-pick-not-approved label.

To merge this cherry pick:

1. It must be approved by the approvers firstly.
2. AFTER it has been approved by approvers, please wait for the cherry-pick merging approval from triage owners.

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