when a file contains i18n labels but is not tracked under any paths in the .i18nrc.json files i18n_check throws the following error:

Error: Untracked file contains i18n label (<translation_id>)

This error is not descriptive enough and might be even more confusing if seen in the CI failure messages. example: https://github.com/elastic/kibana/pull/56675/checks?check_run_id=485968733

A better error message might be:

Error: File contains i18n label untracked in the `.i18nrc.json` file. Please update the `.i18nrc.json` paths with the file path under the correct namespace. (xpack.monitoring.metrics.es.searchLatencyLabel).