expression,json: make the behavior of JSON_VALID consistent (#57496)

[ti-chi-bot]

This is an automated cherry-pick of #57496

What problem does this PR solve?

Issue Number: close #56293

Problem Summary:

The JSON_VALID function behavior is inconsistent between different types, between TiDB and TiKV.

What changed and how does it work?

This PR changes the behavior of returning 0 directly for "other" types. With this modification, the behavior is consistent for JSON, STRING and all other types. Also, it's compatible between TiDB and TiKV.

The strange behavior described in #56293 is caused by different behavior between the SELECTION pushed down to TiKV, and the PROJECTION in TiDB. This PR should fix it.

Please be careful that this behavior is not compatible with MySQL. Because the behavior of MySQL is not consistent to its document (https://dev.mysql.com/doc/refman/5.7/en/json-attribute-functions.html#function_json-valid) and is also not consistent between different types, columns and literals. I submitted a bug report to MySQL : https://bugs.mysql.com/bug.php?id=116703

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.

Release note

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

None

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Please upload report for BASE (release-8.5@dfaec68). Learn more about missing BASE report.

Additional details and impacted files

@@               Coverage Diff                @@
##             release-8.5     #57505   +/-   ##
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  Coverage               ?   57.4830%           
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  Lines                  ?     630226           
  Branches               ?          0           
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  Hits                   ?     362273           
  Misses                 ?     243901           
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Flag	Coverage Δ
integration	37.5214% <100.0000%> (?)
unit	73.0962% <100.0000%> (?)

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

Components	Coverage Δ
dumpling	52.9478% <0.0000%> (?)
parser	∅ <0.0000%> (?)
br	53.3498% <0.0000%> (?)

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[ti-chi-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: Defined2014, XuHuaiyu

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Needs approval from an approver in each of these files:

• OWNERS [Defined2014,XuHuaiyu]
• pkg/expression/OWNERS [XuHuaiyu]

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[ti-chi-bot]

[LGTM Timeline notifier]

Timeline:

• 2024-11-19 09:30:47.73614259 +0000 UTC m=+953409.927011573: ☑️ agreed by Defined2014.
• 2024-11-20 05:56:10.445030732 +0000 UTC m=+11158.064685246: ☑️ agreed by XuHuaiyu.

[YangKeao]

/retest