feat(json): fix hidden column make by json

[YangKeao]

What problem does this PR solve?

Issue Number: close https://github.com/pingcap/tidb/issues/42294

What is changed and how it works?

Ignore hidden column

[ti-chi-bot]

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[sdojjy]

/merge

[ti-chi-bot]

This pull request has been accepted and is ready to merge.

Commit hash: 8461d1ea2c8f181a32e203553cc30884a49e9c95