expression: Disallow conv fuction with hybrid type argement to be pushed down to TiKV (#53502)

[ti-chi-bot]

This is an automated cherry-pick of #53502

What problem does this PR solve?

Issue Number: close #51877

Problem Summary:

What changed and how does it work?

As described in #51877, such case can't be supported in TiKV side, just disallow it to be pushed down.

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-8.1@eee9ab7). Learn more about missing BASE report.

Additional details and impacted files

@@               Coverage Diff                @@
##             release-8.1     #59295   +/-   ##
================================================
  Coverage               ?   71.2363%           
================================================
  Files                  ?       1468           
  Lines                  ?     424007           
  Branches               ?          0           
================================================
  Hits                   ?     302047           
  Misses                 ?     101433           
  Partials               ?      20527           

Flag	Coverage Δ
unit	71.2363% <100.0000%> (?)

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

Components	Coverage Δ
dumpling	52.9656% <0.0000%> (?)
parser	∅ <0.0000%> (?)
br	41.4606% <0.0000%> (?)

[ti-chi-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: lcwangchao, XuHuaiyu

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• pkg/expression/OWNERS [XuHuaiyu]

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[ti-chi-bot]

[LGTM Timeline notifier]

Timeline:

• 2025-02-07 03:57:47.141465 +0000 UTC m=+416938.673876997: ☑️ agreed by lcwangchao.
• 2025-02-07 07:16:17.121526544 +0000 UTC m=+428848.653938541: ☑️ agreed by XuHuaiyu.