Changes to List webhooks

the response property error/details became required for the status 429

added the required property error/details/limit to the response with the 429 status

added the required property error/details/policies to the response with the 429 status

added the required property error/details/policy to the response with the 429 status

added the required property error/details/remaining to the response with the 429 status

added the required property error/details/retryAfter to the response with the 429 status

added the required property error/details/windowSeconds to the response with the 429 status