Vague error message for birthday

[nus-se-script]

Feb does not have 30th however this error message may be a little vague by stating that "Birthday should be in the following format: dd-mm-yyyy and should be a valid day in the past!". Would be good if can differentiate the 2. So that user have a better idea of what exactly went wrong.

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_{[original: nus-cs2103-AY2324S1/pe-interim#4653] [original labels: severity.Low type.FunctionalityBug]}

[SynapseProgramming]

Team's Response

This is more of a feature enhancement, rather than a bug

Duplicate status (if any):

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