dumpling: fix default column collation with upstream when dump table (#30531)

[ti-srebot]

cherry-pick #30531 to release-5.3
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# In tidb repo:
git pr https://github.com/pingcap/tidb/pull/31776

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git push git@github.com:ti-srebot/tidb.git pr/31776:release-5.3-9f744cdf8266

---

What problem does this PR solve?

Issue Number: close #3420

Problem Summary: May miss default colum collation when dump create table.

What is changed and how it works?

Check List

Tests

• Unit test

Release note

Dumpling add default column collation when dump create table.

[ti-chi-bot]

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[ti-chi-bot]

@ti-srebot: 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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[ti-srebot]

/run-all-tests

[ti-srebot]

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[lance6716]

wrong action