confirmPayment can't be false

[LastxTemplar]

Describe the bug
setting the confirmPayment parameter to false results in the Payment Sheet not appearing on the screen and no errors appearing in the console.

await Stripe.instance.presentPaymentSheet(
    parameters: PresentPaymentSheetParameters(
        clientSecret: _paymentSheetData['paymentIntentClientSecret'],
        confirmPayment: false,
    )
);

To Reproduce
Use the Payment Sheet method in the example app provided by the package and change the confirmPayment parameter to false

Expected behavior
The payment sheet should appear as usual in order to input the card details

Smartphone / tablet

• Device: Pixel 4 XL
• OS: Android 11
• Package version: flutter_stripe: ^1.0.1+2
• Flutter version: Flutter 2.0.6 • channel stable

[remonh87]

Good catch we found out that the parameters:
confirmPayment on present paymentsheet and customFlow on initPaymentSheet need to be in sync.

So you need to make sure of the following:
if customFlow = true then confirmPayment = false
if customFlow = false then confirmPayment = true

We will update the docs and add an assert.