test(ticdc): refine test case data col type

[hi-rustin]

What problem does this PR solve?

Issue Number: ref #5928

What is changed and how it works?

Correct col type and value in test.

Check List

Tests

• Unit 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]

[REVIEW NOTIFICATION]

This pull request has been approved by:

• asddongmen

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[hi-rustin]

/run-all-tests

[hi-rustin]

/run-all-tests

[hi-rustin]

/merge

[ti-chi-bot]

This pull request has been accepted and is ready to merge.

Commit hash: adba2b7

[hi-rustin]

/run-verify

[codecov-commenter]

Codecov Report

Merging #6285 (41ca14b) into master (bcb773a) will increase coverage by 0.1169%.
The diff coverage is 73.6227%.

Flag	Coverage Δ
cdc	66.0482% <72.1627%> (+0.1743%)	⬆️
dm	51.9443% <77.0491%> (+0.0714%)	⬆️
engine	63.1687% <100.0000%> (+0.0719%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

@@               Coverage Diff                @@
##             master      #6285        +/-   ##
================================================
+ Coverage   59.0443%   59.1612%   +0.1169%     
================================================
  Files           736        738         +2     
  Lines         85346      85414        +68     
================================================
+ Hits          50392      50532       +140     
+ Misses        30483      30425        -58     
+ Partials       4471       4457        -14