*: modify the printing of column default expression in SHOW CREATE TABLE and Restore (#52940)

[ti-chi-bot]

This is an automated cherry-pick of #52940

What problem does this PR solve?

Issue Number: close #52939

Problem Summary:

See the description of the issue.

What changed and how does it work?

If the column default expression is ast.FuncCallExpr except ast.CurrentTimestamp, wrap an outer parentheses in SHOW CREATE TABLE and Restore()

Check List

Tests

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

  • I checked and no code files have been changed.

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.

Wrap some column default expressions within parentheses in SHOW CREATE TABLE and Restore

[ti-chi-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: CbcWestwolf, tangenta

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• OWNERS [CbcWestwolf,tangenta]

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[ti-chi-bot]

[LGTM Timeline notifier]

Timeline:

• 2024-04-29 01:35:41.303634037 +0000 UTC m=+234695.060769608: ☑️ agreed by CbcWestwolf.
• 2024-04-29 01:51:58.042531078 +0000 UTC m=+235671.799666651: ☑️ agreed by tangenta.