Ability to access 'classic' Azure Function Context, so that I can trace against the same operation_Id

💡 **Feature description**
Currently, I associate my opentelemetry 'dependency' log entries against their parent operation_Id by running the following:
``` python
carrier = {
"traceparent": azf_context.trace_context.Traceparent,
"tracestate": azf_context.trace_context.Tracestate,
}
context = extract(carrier)
```

(as per azure's own docs)

The azure function context is passed in as the final parameter when main() is called by any binding.

While this seems to work for activities, I am unable to find a similar context information from within durable function orchestrations.

Can you help me find out what I'm missing -- or add it?

首先比较为绑定传递给 main() 的上下文与 Durable Functions 编排内部可用的上下文。检查 trace_context 和 operation_Id 在每条路径中是如何公开的，然后确认编排可以访问经典 Azure Function 上下文或等效值，以便根据相同的 operation_Id 跟踪依赖项条目。

由索引模型根据 Issue 内容生成。