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

[yibin87]

LGTM

[ti-chi-bot]

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In response to this:

LGTM

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[lcwangchao]

/retest

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Please upload report for BASE (release-7.5@676f81b). Learn more about missing BASE report.

Additional details and impacted files

@@               Coverage Diff                @@
##             release-7.5     #59294   +/-   ##
================================================
  Coverage               ?   72.1573%           
================================================
  Files                  ?       1417           
  Lines                  ?     413449           
  Branches               ?          0           
================================================
  Hits                   ?     298334           
  Misses                 ?      95108           
  Partials               ?      20007           

Flag	Coverage Δ
unit	72.1573% <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	53.4977% <0.0000%> (?)

[ti-chi-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: lcwangchao, XuHuaiyu, yibin87

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Needs approval from an approver in each of these files:

• pkg/expression/OWNERS [XuHuaiyu]

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[ti-chi-bot]

[LGTM Timeline notifier]

Timeline:

• 2025-02-07 04:11:13.567760867 +0000 UTC m=+417745.100172863: ☑️ agreed by lcwangchao.
• 2025-02-07 07:16:11.045360271 +0000 UTC m=+428842.577772262: ☑️ agreed by XuHuaiyu.