Add the sample data reference for InfluxDB 3 Cloud

Cloud pages don't exist yet at the paths below, so [`content/influxdb3/cloud/request-information.md`](https://github.com/influxdata/docs-v2/blob/master/content/influxdb3/cloud/request-information.md) aliases them to a "Request more information" page. Publish the real content and remove the alias.

Closest existing equivalent to source from: `/influxdb3/enterprise/reference/sample-data/`

## Aliased paths

- [ ] `/influxdb3/cloud/reference/sample-data/`

## Anchors the new content must provide

Shared content deep-links to these fragments. They're currently faked as hidden ``s in `request-information.md`; remove each span once the real heading exists.

- `#get-started-home-sensor-data`
- `#home-sensor-data`
- `#write-home-sensor-data-to-influxdb`
- `#write-the-home-sensor-data-to-influxdb`

## Done when

- [ ] Content is published (or the linking shared content is gated for Cloud)
- [ ] The alias is removed from `request-information.md`
- [ ] Any hidden anchor ``s that belonged to these paths are removed
- [ ] `link-checker` passes

Part of #7391.

Compare /influxdb3/enterprise/reference/sample-data/ with the aliased /influxdb3/cloud/reference/sample-data/ path, then inspect content/influxdb3/cloud/request-information.md for the alias and hidden anchor spans. Publish the Cloud sample-data content with the four required fragments, remove the alias and related spans, and run link-checker.

Written by the indexing model from the issue text.