Update the OTel-Compatible Telemetry Util Function to latest spec

[beeme1mr]

Requirements

• Match latest spec
• Update the description to include a disclaimer that this feature is part of the experimental OTel semcon.

Note

This will be a breaking change but it's required to match the latest spec. It's an experimental feature, so it doesn't require a major release but the change should be denoted in the change log.

[beeme1mr]

Extends #1146