Paypal2: handle incomming capture webhooks (Z#23240966) (#6456)

* store the state of the payment regardless of the state

control.html shows the banner that the payment is in review depending on payment.info

* handle capture ressource

* Update src/pretix/plugins/paypal2/views.py

Co-authored-by: Phin Wolkwitz <wolkwitz@pretix.eu>

* add test

* cleanup logic regarding uninteresting resource_type

* store payment.info during _execute_payment asap

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Co-authored-by: Phin Wolkwitz <wolkwitz@pretix.eu>

src/pretix/plugins/paypal2/payment.py

@@ -677,6 +677,8 @@ class PaypalMethod(BasePaymentProvider):
                 raise PaymentException(_('We had trouble communicating with PayPal'))
             else:
                 pp_captured_order = response.result
+                payment.info = json.dumps(pp_captured_order.dict())
+                payment.save()
 
             try:
                 ReferencedPayPalObject.objects.get_or_create(order=payment.order, payment=payment, reference=pp_captured_order.id)