planner: fix wrong HashAgg estrows for inner operator of index join

[hawkingrei]

What problem does this PR solve?

Issue Number: close #59902

Problem Summary:

What changed and how does it work?

in the constructIndexJoinInnerSideTaskWithAggCheck, we forget to transfer the parents stats by the child stats.

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.

fix wrong HashAgg estrows for inner operator of index join

修复 index join 的 inner operator 中 HashAgg 估算行数错误的问题

[hawkingrei]

/retest

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 73.6540%. Comparing base (d51e00e) to head (5c7b092).
Report is 4 commits behind head on master.

Additional details and impacted files

@@               Coverage Diff                @@
##             master     #60071        +/-   ##
================================================
+ Coverage   73.1879%   73.6540%   +0.4661%     
================================================
  Files          1708       1708                
  Lines        471910     472596       +686     
================================================
+ Hits         345381     348086      +2705     
+ Misses       105318     103328      -1990     
+ Partials      21211      21182        -29     

Flag	Coverage Δ
integration	42.7884% <100.0000%> (?)
unit	72.4433% <100.0000%> (+0.0565%)	⬆️

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

Components	Coverage Δ
dumpling	52.6910% <ø> (ø)
parser	∅ <ø> (∅)
br	47.2482% <ø> (+0.0406%)	⬆️

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[elsa0520]

The stream agg also should be changed together

[hawkingrei]

The stream agg also should be changed together

I have updated it.

[hawkingrei]

/retest

[ti-chi-bot]

[APPROVALNOTIFIER] This PR is APPROVED

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

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• OWNERS [AilinKid,qw4990]
• pkg/planner/OWNERS [AilinKid,qw4990]

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[ti-chi-bot]

[LGTM Timeline notifier]

Timeline:

• 2025-03-25 09:21:09.041084411 +0000 UTC m=+952162.725320507: ☑️ agreed by AilinKid.
• 2025-03-25 12:35:25.625027029 +0000 UTC m=+963819.309263125: ☑️ agreed by qw4990.

[hawkingrei]

/cherrypick release-8.5

[ti-chi-bot]

@hawkingrei: new pull request created to branch release-8.5: #60336.
But this PR has conflicts, please resolve them!

In response to this:

/cherrypick release-8.5

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