fix: cannot edit after sort

[jajugoguma]

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Description

Fixed an issue where editing could not be performed after sorting.

In the previous fix, i unobserved all data after sorting. However, i found additional issues where the next behavior did not work as intended (changing the data in the viewport to observable data).

Therefore, we discarded the previous fix and proceeded with a fix that proactively changes the rows that were previously observable data and the rows that are included in the viewport after sorting to observable data.

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Thank you for your contribution to TOAST UI product. 🎉 😘 ✨

[jajugoguma]

변경사항 자체는 간단해보이는데 파급력이 커보이니 가능하면 예제 하나씩 화면에서 수동 테스트 해보시는건 어떨까요?

넵 복합 기능 직접 하나씩 테스트해봤습니다! ㅎㅎㅎ