planner: Fix more cases that explain does not display a truncated value

[EricZequan]

What problem does this PR solve?

Issue Number: ref #54245

Problem Summary:

What changed and how does it work?

This PR brings long constant truncation to more kind of plans.

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 @EricZequan. Thanks for your PR.

PRs from untrusted users cannot be marked as trusted with /ok-to-test in this repo meaning untrusted PR authors can never trigger tests themselves. Collaborators can still trigger tests on the PR using /test all.

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[codecov]

Codecov Report

Attention: Patch coverage is 90.32258% with 3 lines in your changes missing coverage. Please review.

Project coverage is 56.0721%. Comparing base (5dae1a3) to head (8d2e4b1).
Report is 215 commits behind head on master.

Additional details and impacted files

@@                Coverage Diff                @@
##             master     #55466         +/-   ##
=================================================
- Coverage   72.8045%   56.0721%   -16.7324%     
=================================================
  Files          1604       1729        +125     
  Lines        445563     622236     +176673     
=================================================
+ Hits         324390     348901      +24511     
- Misses       101206     249587     +148381     
- Partials      19967      23748       +3781     

Flag	Coverage Δ
integration	37.2679% <87.0967%> (?)

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

Components	Coverage Δ
dumpling	52.9567% <ø> (ø)
parser	∅ <ø> (∅)
br	52.8979% <ø> (+7.0977%)	⬆️

[EricZequan]

/retest

[EricZequan]

/retest

[tiprow]

@EricZequan: Cannot trigger testing until a trusted user reviews the PR and leaves an /ok-to-test message.

In response to this:

/retest

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[EricZequan]

/retest

[tiprow]

@EricZequan: Cannot trigger testing until a trusted user reviews the PR and leaves an /ok-to-test message.

In response to this:

/retest

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[ti-chi-bot]

[APPROVALNOTIFIER] This PR is NOT APPROVED

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[ti-chi-bot]

@EricZequan: 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
idc-jenkins-ci-tidb/unit-test	8d2e4b1	link	true	/test unit-test

Full PR test history. Your PR dashboard.

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[ti-chi-bot]

PR needs rebase.

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[breezewish]

Close for #55934