Return status code 300 Multiple Choice when find has multiple candidates

[dfabulich]

This differentiates it from status code 200 when it returns content directly

https://developer.mozilla.org/en-US/docs/Web/HTTP/Status/300

The HTTP 300 Multiple Choices redirect status response code indicates that the request has more than one possible responses. The user-agent or the user should choose one of them. As there is no standardized way of choosing one of the responses, this response code is very rarely used.

[curiousdannii]

Makes sense. But if we switch it to a search parameter then 200 is probably better. Let's wait for Zarf's evaluation.