statistics: fix auto analyze triggered out of specified time (#28703)

[ti-srebot]

cherry-pick #28703 to release-5.2
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# In tidb repo:
git pr https://github.com/pingcap/tidb/pull/28725

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git push git@github.com:ti-srebot/tidb.git pr/28725:release-5.2-9f094cc865eb

---

What problem does this PR solve?

Issue Number: close #28698

Problem Summary:

As the title stated.

What is changed and how it works?

All kinds of auto analyze should check the time before being executed.

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

fix auto analyze may get triggered out of specified time.

[ti-chi-bot]

[REVIEW NOTIFICATION]

This pull request has been approved by:

• qw4990
• winoros

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[ti-srebot]

/run-all-tests

[ti-srebot]

@time-and-fate you're already a collaborator in bot's repo.

[zhouqiang-cl]

/merge

[ti-chi-bot]

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

Commit hash: 5e07682

[ti-chi-bot]

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