OpenAI conversation: Standardizing API response

[AkhileshNegi]

Describe the bug
If the response_id (for a conversation) is wrong in the webhook node, Kaapi sends back this:

%{
  "data" => nil,
  "error" => "Invalid 'previous_response_id': '@results.ress'. Expected an ID that contains letters, numbers, underscores, or dashes, but this value contained additional characters.",
  "metadata" => nil,
  "success" => false
}

The response doesn't return any metadata passed as additional parameters like contact, flow, or other details that we originally sent. Because of this, the flow is crashing — we need the contact and flow details to resume the flow.