Revert "*: reduce object allocation by reuse chunk column (#29064)"

[guo-shaoge]

This reverts commit 36bc41a.

What problem does this PR solve?

Issue Number: close #29554

Problem Summary: We got same column pointer in column pool. It cause unexpected situation when chunk.SwapColumn() is called, which compare column pointer to check if two column are same one.

What is changed and how it works?

Check List

Tests

• Unit test
• Integration test
• Manual test (add detailed scripts or steps below)
• No code

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

None

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[ti-chi-bot]

@guo-shaoge: This cherry pick PR is for a release branch and has not yet been approved by release team.
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[guo-shaoge]

Fixed in #29580