Request to Add `30011`/`mms_expired_rejected_failed_or_unsupported` to LaML Error Codes and SW REST Error Codes

[cassieemb]

references https://github.com/signalwire/cloud-product/issues/15730

Background

Delivery receipt codes from providers are mapped to error codes (for LaML) and readable causes for everything else.
ex: 30005 -> invalid_destination_handset

Changes

One of our MMS codes was mapping to invalid_destination_handset, but that was not correct. In order to be more accurate, we created a new code/cause for this error.

LaML Changes
We added a new code, 30011, that maps to the message "MMS Sent: Expired, Rejected, Failed, or Not Supported".
https://signalwire.com/docs/compatibility-api/rest/error-codes

SW REST Changes
We added the code/cause mms_expired_rejected_failed_or_unsupported - it maps to the same message "MMS Sent: Expired, Rejected, Failed, or Not Supported"
https://signalwire.com/docs/apis/error-codes

Important

30008/unknown_destination_handset is not going away or changing in any way - this particular provider error just will map to something else now. The existing documentation on this can remain unchanged.

Notes

Barring any issues, this will be live with the production deployment on 5/14.

A few parts are intentionally vague to conceal internal provider details - however, please feel free to reach out with any questions!

[cassieemb]

Confirming change is live on production now