fix date format identifies '\n' as invalid separator (#4046)

[ti-chi-bot]

This is an automated cherry-pick of #4046

What problem does this PR solve?

Issue Number: close #4036

Problem Summary:

fix date formate identifies '\n' is invalid separator

What is changed and how it works?

Check List

Tests

• Unit test

Release note

fix date format identifies '\n' as invalid separator

[ti-chi-bot]

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[ti-chi-bot]

@ti-chi-bot: This cherry pick PR is for a release branch and has not yet been approved by release team.
Adding the do-not-merge/cherry-pick-not-approved label.

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[mengxin9014]

/run-all-tests

[mengxin9014]

/run-all-tests