The current secured-cluster-services Helm chart contains an ancient compatibility layer for still supporting configuration formats for "sensor" Helm chart which was superseded by our secured-cluster-services Helm chart several years ago.

See the documentation file  
image/templates/helm/stackrox-secured-cluster/sensor-chart-upgrade.md.htpl.

Might be about time to finally deprecate this old style of configuration secured-services and finally get rid of this compat layer.