- fixed addPaymentDataToRequest method, adding data to request instead of quote

[pknap]

Hi, thank you for this great plugin. I tried to use it with payment method conditions, which I suppose is not used very often, as stated in documentation: https://meanbee.atlassian.net/wiki/spaces/EXT/pages/35160074/Shipping+Rules#ShippingRules-Conditions in payment conditions section. However, even after changing checkout flow, so payment method is selected before shipping method it did not work properly. I found out that getSanitisedValue method of Meanbee_Shippingrules_Model_Rule_Condition returns null for payment_method attribute, and then I found, that payment_method data is not saved to $request, but to $quote in Carrier model. I think it's a typo, and since this functionality is not 100% in scope of extension no one found it before, but maybe it will be useful for someone in the future.