able to reverse interview stage

[nus-se-script]

I do not think it make sense to reverse some of the interview stage of an applicant. for example with interview confirmed using add n/y t/bc e/y@example.com j/CS2103 p/000 r/Good at drawing

it does not make sense for user to be able to make mistake edit with edit [index] t/N to make it a new applicant

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_{[original: nus-cs2103-AY2425S1/pe-interim#134] [original labels: type.FeatureFlaw severity.Low]}

[ChinSekYi]

Team's Response

Thank you for the issue.

We think that it is possible that HR entered the tag for an applicant wrongly. Hence, editing the tag allows the HR the flexibility to fix these changes, allowing them to revert the tag to other interview stages, even if it is a previous stage.

Duplicate status (if any):

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