parser: correctly escape placement options (#37606)

[ti-srebot]

cherry-pick #37606 to release-5.3
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/37644

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

git push git@github.com:ti-srebot/tidb.git pr/37644:release-5.3-e79ddd307623

---

Signed-off-by: xhe xw897002528@gmail.com

What problem does this PR solve?

Issue Number: close #37526

Problem Summary: As title.

Check List

Tests

• Unit test
• Integration test
• Manual test (add detailed scripts or steps below)
• No code

Side effects

• Performance regression: Consumes more CPU
• Performance regression: Consumes more Memory
• Breaking backward compatibility

Documentation

• Affects user behaviors
• Contains syntax changes
• Contains variable changes
• Contains experimental features
• Changes MySQL compatibility

Release note

Please refer to Release Notes Language Style Guide to write a quality release note.

Fix incorrect output of `show create placement policy` with a policy of double quotes

[ti-chi-bot]

[REVIEW NOTIFICATION]

This pull request has been approved by:

• xiongjiwei
• zimulala

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[ti-srebot]

/run-all-tests

[ti-srebot]

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

[xhebox]

/merge

[ti-chi-bot]

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

Commit hash: 447a04f

[xhebox]

/run-all-test

[xhebox]

/merge