tests(ticdc): add lossy_ddl test (#8859)

[ti-chi-bot]

This is an automated cherry-pick of #8859

What problem does this PR solve?

Issue Number: close #8686

What is changed and how it works?

Add test for lossy DDLs.

Check List

Tests

• Integration test

Questions

Will it cause performance regression or break compatibility?

No

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

No

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 release team.
Adding the do-not-merge/cherry-pick-not-approved label.

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