User provided JsonPaths should be validated/rejected at startup #7411
Description
In a profile from a system where invalid JSON paths were configured, a lot of time (> 20%) was spent during ingestion throwing at least one JSON path validation exception per row. The operator of a properly configured deployment should ensure that JSON paths are valid, but this is a poor failure mode and it would be better to reject the transformation and log very clearly that the JSON path failed validation and won't be applied.
