statistics: add benchmark for BuildHistAndTopN with low NDV

[hawkingrei]

What problem does this PR solve?

Issue Number: ref #47275

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

Merging #48961 (e26908b) into master (c741119) will increase coverage by 1.6487%.
Report is 1 commits behind head on master.
The diff coverage is n/a.

Additional details and impacted files

@@               Coverage Diff                @@
##             master     #48961        +/-   ##
================================================
+ Coverage   70.9941%   72.6428%   +1.6487%     
================================================
  Files          1368       1389        +21     
  Lines        404987     411129      +6142     
================================================
+ Hits         287517     298656     +11139     
+ Misses        97448      93612      -3836     
+ Partials      20022      18861      -1161     

Flag	Coverage Δ
integration	43.6479% <ø> (?)
unit	70.9941% <ø> (ø)

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

Components	Coverage Δ
dumpling	53.9663% <ø> (ø)
parser	∅ <ø> (∅)
br	48.8110% <ø> (-4.2698%)	⬇️

[ti-chi-bot]

[APPROVALNOTIFIER] This PR is APPROVED

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

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• OWNERS [qw4990,winoros]

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[ti-chi-bot]

[LGTM Timeline notifier]

Timeline:

• 2023-11-28 08:46:57.397274964 +0000 UTC m=+912446.062501160: ☑️ agreed by winoros.
• 2023-11-28 08:48:24.326912404 +0000 UTC m=+912532.992138600: ☑️ agreed by qw4990.