[Linux Metrics]: Add `host.containerized` as a dimension for time series data streams (TSDS)

[AndersonQ]

#17379 migrates the metrics data stream to TSDS. However, host.containerized could not be added as a dimension due to elastic/package-spec#1106. Once it's resolved, we can make host.containerized a dimension.

[elasticmachine]

Pinging @elastic/elastic-agent-data-plane (Team:Elastic-Agent-Data-Plane)