Improve OTel bridge compatibility with existing Azure instrumentation #2455
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This ensures that the Azure SDK instrumentation doesn't use the existing
Activity
span ID, which, when combined with the OTel bridge, can lead to spans being parented by themselves.This also enhances the logic of the OTel bridge so that we skip span creation for activities coming from the Azure SDK libraries if our Azure instrumentation assemblies are loaded. This ensures we don't create essentially repeated child spans.
Fixes #2452