planner: encapsulate baseLogicalPlan push down topN logic and move addSection to util

[AilinKid]

What problem does this PR solve?

Issue Number: ref #51664, ref #52714

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

[tiprow]

Hi @AilinKid. Thanks for your PR.

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[AilinKid]

/hold

[AilinKid]

/unhold

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 74.6538%. Comparing base (4fe70da) to head (ab2dfd0).
Report is 8 commits behind head on master.

Additional details and impacted files

@@               Coverage Diff                @@
##             master     #53231        +/-   ##
================================================
+ Coverage   72.4796%   74.6538%   +2.1741%     
================================================
  Files          1493       1493                
  Lines        429362     429903       +541     
================================================
+ Hits         311200     320939      +9739     
+ Misses        98931      89113      -9818     
- Partials      19231      19851       +620     

Flag	Coverage Δ
integration	49.1309% <93.3333%> (?)
unit	71.3900% <100.0000%> (+0.0112%)	⬆️

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

Components	Coverage Δ
dumpling	53.9957% <ø> (ø)
parser	∅ <ø> (∅)
br	50.4885% <ø> (+9.0483%)	⬆️

[ti-chi-bot]

[APPROVALNOTIFIER] This PR is APPROVED

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

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[ti-chi-bot]

[LGTM Timeline notifier]

Timeline:

• 2024-05-14 06:59:15.971967614 +0000 UTC m=+1550109.729103180: ☑️ agreed by hawkingrei.
• 2024-05-14 07:03:13.387207242 +0000 UTC m=+1550347.144342816: ☑️ agreed by zimulala.

[AilinKid]

/test check-dev2

[tiprow]

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In response to this:

/test check-dev2

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