[regression-test](fix) fix schema_change_p2/test_schema_change.groovy case

[shuke987]

Proposed changes

Issue Number: close #xxx

Further comments

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[doris-robot]

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[shuke987]

run buildall

[github-actions[bot]]

PR approved by at least one committer and no changes requested.

[github-actions[bot]]

PR approved by anyone and no changes requested.