statistics/handle: refine the condition of dumping stats delta (#41133)

[ti-chi-bot]

This is an automated cherry-pick of #41133

What problem does this PR solve?

Issue Number: ref #38189 ref #36004 ref #39785

Problem Summary:

What is changed and how it works?

Refine the condition of dumping stats delta:

1. If the table doesn't exist or is a mem table or system table, then return false.
2. If the mode is DumpAll, then return true.
3. If the stats delta haven't been dumped in the past hour, then return true.
4. If the table stats is pseudo or empty or Modify Count / Table Count exceeds the threshold.

There are two changes(marked in bold):

1. a mem table or system table: It can prevent the cases such as Continuously update the stats_meta of mysql.tidb in auto analyze loop #39785.
2. pseudo: When we fail to create stats meta after creating a table, ddl, statistics: fix stats meta missing when creating many tables at once #38301 uses the dump stats delta procedure to fill in missing stats meta. However, in that case, the table's stats is pseudo and the old condition would refuse to dump stats delta. So we need the change to fill in missing stats meta completely.

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.

None

[ti-chi-bot]

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[wuhuizuo]

/hold high priority for trunk branch

[ti-chi-bot]

/unhold

[ti-chi-bot]

This cherry pick PR is for a release branch and has not yet been approved by release team.
Adding the do-not-merge/cherry-pick-not-approved label.

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[ti-chi-bot]

PR needs rebase.

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[codecov]

Codecov Report

❗ No coverage uploaded for pull request base (release-6.5@13eeb6a). Click here to learn what that means.
The diff coverage is n/a.

Additional details and impacted files

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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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Needs approval from an approver in each of these files:

• OWNERS [hawkingrei,qw4990]

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[ti-chi-bot]

[LGTM Timeline notifier]

Timeline:

• 2023-12-22 07:43:18.699072288 +0000 UTC m=+1206089.736299216: ☑️ agreed by qw4990.
• 2023-12-22 08:28:09.874948128 +0000 UTC m=+1208780.912175040: ☑️ agreed by hawkingrei.