ddl, executor: fix test race in terror (#25405)

[ti-srebot]

cherry-pick #25405 to release-5.2
You can switch your code base to this Pull Request by using git-extras:

# In tidb repo:
git pr https://github.com/pingcap/tidb/pull/28750

After apply modifications, you can push your change to this PR via:

git push git@github.com:ti-srebot/tidb.git pr/28750:release-5.2-9321489621f6

---

What problem does this PR solve?

Issue Number: close #25393

Problem Summary:

NewStdErr is NOT thread-safe and need be used in init phase

What is changed and how it works?

Proposal: xxx

What's Changed, How it Works:

tiny fix...move to init phase

Related changes

• Need to cherry-pick to the release branch

Check List

Tests

• No code

Side effects

• n/a

Release note

• No release note

[ti-chi-bot]

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[ti-chi-bot]

@ti-srebot: Adding the "do-not-merge/release-note-label-needed" label because no release-note block was detected, please follow our release note process to remove it.

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[ti-srebot]

/run-all-tests

[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.

To merge this cherry pick, it must first be approved by the collaborators.

AFTER it has been approved by collaborators, please ping the release team in a comment to request a cherry pick review.

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[ti-srebot]

@lysu you're already a collaborator in bot's repo.

[tiancaiamao]

There is no change is this PR.