Overzealous input validation for phone number of client

[nus-pe-bot]

There might be international residents, or even residents who are holding international phone number. However, the application does not allow the input of phone numbers with extensions, such as +606 95858447, but only allow a total of 8 digits in phone number. This might be very restricting and there is no point to restrict such a field.

Steps to replicate:

Execute the command add n/Betsy Crowe t/friend e/betsycrowe@example.com r/2-3 p/+65 12345678 m/A3456789B g/F h/A

Expected result: New resident added

Actual Result: Adding of such a resident is blocked, and require the phone number to be of length 8, which is very inconvenient for cases like that.

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_{[original: nus-cs2103-AY2223S1/pe-interim#2521] [original labels: type.FeatureFlaw severity.Low]}

[nealetham]

Team's Response

Both issues relate to the input validation of phone numbers.

Duplicate status (if any):

Duplicate of #2386