OTel data stream routing does not sanitize values

[carsonip]

OTel data stream routing implemented in elastic/apm-data#201 does not sanitize values, i.e. a - in the supplied dataset / namespace will go through the logic and result in non-compliant data stream name. There are more rules to observe, see in https://www.elastic.co/guide/en/ecs/current/ecs-data_stream.html . There is also an implementation of DS fields sanitization in ES, but there are also issues with Elasticsearch's implementation as stated in elastic/elasticsearch#112936

The bugfix can be a breaking change for existing users and should be stated as such in changelog.

Equiv task in es exporter: open-telemetry/opentelemetry-collector-contrib#34285

[simitt]

The bugfix can be a breaking change for existing users and should be stated as such in changelog.

Let's call it out in the release notes to make users aware, but generally I would see this as a bugfix.