planner: deprecate the logical interface CanPushToCop and its implementation canPushToCopImpl.

[AilinKid]

What problem does this PR solve?

Issue Number: ref #62006

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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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 73.3644%. Comparing base (5968f81) to head (9abe068).
Report is 2 commits behind head on master.

Additional details and impacted files

@@               Coverage Diff                @@
##             master     #62235        +/-   ##
================================================
+ Coverage   72.9029%   73.3644%   +0.4615%     
================================================
  Files          1750       1750                
  Lines        484502     484525        +23     
================================================
+ Hits         353216     355469      +2253     
+ Misses       109660     107455      -2205     
+ Partials      21626      21601        -25     

Flag	Coverage Δ
integration	42.3832% <100.0000%> (?)
unit	72.2235% <100.0000%> (+0.0565%)	⬆️

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

Components	Coverage Δ
dumpling	52.7804% <ø> (ø)
parser	∅ <ø> (∅)
br	46.3374% <ø> (+0.0127%)	⬆️

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[King-Dylan]

/lgtm

[ti-chi-bot]

[LGTM Timeline notifier]

Timeline:

• 2025-07-07 03:41:18.319976258 +0000 UTC m=+1884731.043155239: ☑️ agreed by zimulala.
• 2025-07-07 04:07:07.231563815 +0000 UTC m=+1886279.954742797: ☑️ agreed by King-Dylan.

[ti-chi-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: King-Dylan, zimulala

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• pkg/planner/OWNERS [King-Dylan]

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[tiprow]

@AilinKid: The following test failed, say /retest to rerun all failed tests or /retest-required to rerun all mandatory failed tests:

Test name	Commit	Details	Required	Rerun command
fast_test_tiprow	0d1199b	link	true	/test fast_test_tiprow

Full PR test history. Your PR dashboard.

Details

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes-sigs/prow repository. I understand the commands that are listed here.