planner: fix RANGE COLUMNS partition prune gives wrong result with special collation (#57344)

[ti-chi-bot]

This is an automated cherry-pick of #57344

What problem does this PR solve?

Issue Number: close #57261

Problem Summary: Don't use sortKey to do partition prune.

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

All modified and coverable lines are covered by tests ✅

Please upload report for BASE (release-7.5@07976dd). Learn more about missing BASE report.

Additional details and impacted files

@@               Coverage Diff                @@
##             release-7.5     #57406   +/-   ##
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  Coverage               ?   72.2038%           
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  Files                  ?       1415           
  Lines                  ?     412783           
  Branches               ?          0           
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  Hits                   ?     298045           
  Misses                 ?      94796           
  Partials               ?      19942           

Flag	Coverage Δ
unit	72.2038% <100.0000%> (?)

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

Components	Coverage Δ
dumpling	52.9400% <0.0000%> (?)
parser	∅ <0.0000%> (?)
br	53.5253% <0.0000%> (?)

[ti-chi-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: Defined2014, qw4990

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[ti-chi-bot]

[LGTM Timeline notifier]

Timeline:

• 2024-12-03 10:11:28.311857691 +0000 UTC m=+1149675.931512207: ☑️ agreed by Defined2014.
• 2024-12-04 02:07:58.018939189 +0000 UTC m=+1207065.638593703: ☑️ agreed by qw4990.

[Defined2014]

/retest