executor: reuse memory for parallelSortSpillHelper (#53859)

[ti-chi-bot]

This is an automated cherry-pick of #53859

What problem does this PR solve?

Issue Number: close #53861

Problem Summary:

What changed and how does it work?

we get a profiler while we benchmark sync load. it takes too much time on the newParallelSortSpillHelper. it is unnecessary.

https://flamegraph.com/share/4dca9137-2419-11ef-ab1b-b6898751f631

Check List

Tests

• Unit test
• Integration test
• Manual test (add detailed scripts or steps below)

after optimization

t takes less time on the newParallelSortSpillHelper

https://flamegraph.com/share/822c3df8-247d-11ef-ab1b-b6898751f631

• 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

[ti-chi-bot]

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[ti-chi-bot]

This cherry pick PR is for a release branch and has not yet been approved by triage owners.
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[ti-chi-bot]

@ti-chi-bot: 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/check_dev	2e0c3dc	link	true	/test check-dev

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