[OTel hybrid agent] Investigate bi-directional context propagation between NR and OTel

[jasonjkeller]

The prototype in the Java agent appears to be uni-directional, where it receives a notification that a span started or ended, and then it starts/stops a transaction/segment using the internal New Relic data model.

It doesn't appear that this internal state is reflected back into the OTel spans.

Maybe this uni-directional approach is good enough to start out with?

Maybe we can have a better offering if we can support reflecting some of our internal context back via the OTel spans?

See slack conversation for some additional context: https://newrelic.slack.com/archives/C07PUH00WBZ/p1733516757075929

See the results described here for an example of some of the issues that need to be addressed: #2060 (comment)

[workato-integration]

https://new-relic.atlassian.net/browse/NR-329805