Changes to Poll (or long-poll) a payment session

the response's body type changed from object to no type for status 200

removed the media type application/json for the response with the status 404

removed the required property sessionId from the response with the 200 status

removed the required property status from the response with the 200 status

removed the optional property timestamp from the response with the 200 status

removed the optional property transactionHash from the response with the 200 status

api operation id getPaymentStatus removed and replaced with

the endpoint scheme security BearerAuth was removed from the API

api tag Payment (x402) added

api tag Payment removed

added the new optional query request parameter wait

added PaymentSession subschema #2 to the response body allOf list for the response status 200

removed the non-success response with the status 401