[fix](schema) Table column order is changed if add a column and do truncate #24981
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#24707 introduces this bug.
The table column order is changed if add a column in the middle of all columns and then truncate, since the new added column has the max column_unique_id.
This bug lead to
insert_group_commit_into_duplicatefail.Proposed changes
Issue Number: close #xxx
Further comments
If this is a relatively large or complex change, kick off the discussion at dev@doris.apache.org by explaining why you chose the solution you did and what alternatives you considered, etc...