dynamically setting the serverUrl
- I can reliably get a hardcoded serverUrl working with an assistant.
- I can trigger calls with an "undefined" assistant where all the details are provided in the API request to CreatePhoneCall.
2a. I can not get those "undefined" assistants to send events to a provided serverUrl.
2b. Using the same serverUrl with an assistant works just fine, so I know there's some break in expectations here. What's confusing is that the response from createPhoneCall includes the serverUrl, but then sends nothing back.
