sink(ticdc): fix incorrect default field (#12038)

[ti-chi-bot]

This is an automated cherry-pick of #12038

What problem does this PR solve?

Issue Number: close #12037

What is changed and how it works?

OriginDefaultValue is used as the column value when the default value is invisible.
It should not be used as the default field.

Affected protocol

• Cloud Storage
• Simple
• Avro
• Debezium

Check List

Tests

• Unit test
• 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

fix incorrect `default` field.

[ti-chi-bot]

@wk989898 This PR has conflicts, I have hold it.
Please resolve them or ask others to resolve them, then comment /unhold to remove the hold label.

[codecov]

Codecov Report

Attention: Patch coverage is 50.00000% with 4 lines in your changes missing coverage. Please review.

Please upload report for BASE (release-8.5@df8c488). Learn more about missing BASE report.

Additional details and impacted files

Components	Coverage Δ
cdc	59.5333% <0.0000%> (?)
dm	50.0519% <0.0000%> (?)
engine	53.2505% <0.0000%> (?)

Flag	Coverage Δ
unit	55.1186% <50.0000%> (?)

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

@@               Coverage Diff                @@
##             release-8.5     #12053   +/-   ##
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  Coverage               ?   55.1186%           
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  Files                  ?       1003           
  Lines                  ?     136783           
  Branches               ?          0           
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  Hits                   ?      75393           
  Misses                 ?      55857           
  Partials               ?       5533           

[wk989898]

/retest-required

[wk989898]

/unhold

[wk989898]

/retest-required

[ti-chi-bot]

[APPROVALNOTIFIER] This PR is APPROVED

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