stripe: use SQLQueue to prevent dropping activities

default activate() behavior is to not queue the activity if another
activity with the same path/method_id already exist. We don't want this
here.

bt5/erp5_stripe/SkinTemplateItem/portal_skins/erp5_stripe/StripePaymentSessionModule_createStripeSession.py

@@ -3,7 +3,7 @@ import json
 response = connector.createSession(data=data)
 assert "id" in response, response
 
-context.activate().StripePaymentSessionModule_storeStripeSession(
+context.activate(activity='SQLQueue').StripePaymentSessionModule_storeStripeSession(
   reference=response["id"],
   expiration_date=context.getTypeBasedMethod('getStripePaymentSessionExpirationDate')(),
   resource=resource,