[iOS] Crash if label of PaymentItem is not provided

[omartinma]

Hi,

According to the model definition of PaymentItem the property label is not required. If we dont pass a value it will crash in iOS as soon as you call showPaymentSelector. I did not test it on Android yet, not sure if the same case there but I believe we have 2 options:

1. Make the field not nullable.
2. Add documentation about the need to pass a value on iOS

Thanks!

[JlUgia]

Hi @omartinma, thank you for reporting the issue.
I'm leaning towards making it required. Only documenting it will still yield crashes for some.