Support `options.cloud.note` for `k6 run --out cloud`

[na--]

options.cloud.note was recently (https://github.com/k6io/cloud-feature-requests/issues/4) added to cloud tests, but we still don't support it in local tests that stream their results to the cloud, as mentioned in this forum thread.

Related issues:

• https://github.com/k6io/k6/issues/1155
• https://github.com/k6io/k6/issues/1817