statistics: optimize stats delta dumping with batch processing

[Rustin170506]

What problem does this PR solve?

Issue Number: ref #57869

close #58890
close #58884
close #58885
close #58993
close #59022
close #59120
close #59139

Problem Summary:

What changed and how does it work?

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

[codecov]

Codecov Report

Attention: Patch coverage is 75.52448% with 70 lines in your changes missing coverage. Please review.

Please upload report for BASE (release-8.5@722347b). Learn more about missing BASE report.

Additional details and impacted files

@@               Coverage Diff                @@
##             release-8.5     #59150   +/-   ##
================================================
  Coverage               ?   56.8947%           
================================================
  Files                  ?       1769           
  Lines                  ?     627453           
  Branches               ?          0           
================================================
  Hits                   ?     356988           
  Misses                 ?     246379           
  Partials               ?      24086           

Flag	Coverage Δ
integration	36.9082% <65.0349%> (?)
unit	72.5918% <72.7272%> (?)

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

Components	Coverage Δ
dumpling	52.8711% <0.0000%> (?)
parser	∅ <0.0000%> (?)
br	52.2934% <0.0000%> (?)

[Rustin170506]

/retest

[ti-chi-bot]

[LGTM Timeline notifier]

Timeline:

• 2025-01-23 08:31:07.747336593 +0000 UTC m=+342395.078255999: ☑️ agreed by GMHDBJD.
• 2025-01-23 09:05:03.117227272 +0000 UTC m=+344430.448146677: ☑️ agreed by yudongusa.

[ti-chi-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: GMHDBJD, qw4990, yudongusa

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Needs approval from an approver in each of these files:

• OWNERS [GMHDBJD,qw4990]
• pkg/disttask/OWNERS [GMHDBJD]
• pkg/domain/OWNERS [GMHDBJD]
• pkg/executor/importer/OWNERS [GMHDBJD]
• pkg/lightning/OWNERS [GMHDBJD]
• pkg/planner/OWNERS [qw4990]
• pkg/sessionctx/variable/OWNERS [yudongusa]
• pkg/statistics/OWNERS [qw4990]
• pkg/table/OWNERS [GMHDBJD]

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