[Spike] Verify if `status_reason` is being used
For related to: #390200 (closed), in !134490 (merged), we added an errors: []
to the response
With this change, the top-level status_reason
may be redundant.
This is a spike issue to see if we have consumers of status_reason:
, or if it can be removed entirely.
This is blocked until #390200 (closed) is resolved