statistics: check Killed in the GenJSONTableFromStats (#47778)

[ti-chi-bot]

This is an automated cherry-pick of #47778

What problem does this PR solve?

Issue Number: close #47779

Problem Summary:

What is changed and how it works?

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.

None

[hawkingrei]

/test all

[tiprow]

@hawkingrei: No presubmit jobs available for pingcap/tidb@release-7.5

In response to this:

/test all

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[ti-chi-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: hawkingrei, qw4990

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[ti-chi-bot]

[LGTM Timeline notifier]

Timeline:

• 2023-10-26 18:51:17.713932114 +0000 UTC m=+2547075.301042243: ☑️ agreed by hawkingrei.
• 2023-10-27 03:21:35.358977015 +0000 UTC m=+2577692.946087158: ☑️ agreed by qw4990.