RawGooglePayButton requires a PaymentConfiguration

[JudahMcNicholl]

RawGooglePayButton requires PaymentConfiguration but this doesn't allow us to use flutter_pay's Pay client effectively.

[JlUgia]

Can you elaborate on that @JudahMcNicholl? The RawGooglePayButton now uses the PayButton API for Google Pay, which requires initialization parameters from the configuration. (see https://developers.google.com/pay/api/android/guides/resources/pay-button-api).

[JlUgia]

Closing this issue due to inactivity. Feel free to re-open if relevant.

[rasuldev]

I think it is more reasonable to have a PaymentConfiguration in a GooglePayButton, but not in RawGooglePayButton since we manually process onPressed using Pay client:

final Pay payClient = Pay({
        PayProvider.google_pay: getGooglePayConfiguration(),
      });

final paymentResult = await payClient.showPaymentSelector(
        PayProvider.google_pay,
        [item],
      );
...