[fix](Nereids) fix cast string to date (#46065)

[LiBinfeng-01]

pick: #46065
Issue Number: close #xxx

Related PR: #35637

Problem Summary:
When cast("201-01-01" as datetimev2(0)), The result is "2020-01-01" but it is wrong. It should be result in "0201-01-01".
201 would be regarded as 20xy-0z as related pr show, it was a bug. But actually it should not have this trasformation and result in

What problem does this PR solve?

Issue Number: close #xxx

Related PR: #xxx

Problem Summary:

Release note

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Check List (For Author)

• Test

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  • Unit Test
  • Manual test (add detailed scripts or steps below)
  • No need to test or manual test. Explain why:
    • This is a refactor/code format and no logic has been changed.
    • Previous test can cover this change.
    • No code files have been changed.
    • Other reason

• Behavior changed:

  • No.
  • Yes.

• Does this need documentation?

  • No.
  • Yes.

Check List (For Reviewer who merge this PR)

• Confirm the release note
• Confirm test cases
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• Add branch pick label

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[LiBinfeng-01]

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[LiBinfeng-01]

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[LiBinfeng-01]

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