Activate prescription works on active items

[nus-pe-bot]

Activate command works while the prescription item is already active.

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_{[original: nus-cs2113-AY2223S1/pe-interim#1036] [original labels: type.FeatureFlaw severity.Medium]}

[RiaVora]

Team's Response

This is allowed: we want the doctor to be able to ensure that they have activated something. Performing the command twice has no harm, although one possible improvement could be that we alert the doctor it is already activated.

Duplicate status (if any):

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