[ASP.NET Core Integration] Evaluate coordination of services in ASP.NET and gRPC/Functions pipeline

To coordinate both pipelines to use the same scope, there is logic like [this](https://github.com/Azure/azure-functions-dotnet-worker/blob/49cc0270da5f12b8d7cb133b48ded39ed2e04778/extensions/Worker.Extensions.Http.AspNetCore/src/AspNetMiddleware/WorkerRequestServicesMiddleware.cs#L30). Due to the cancellation callback [here](https://github.com/Azure/azure-functions-dotnet-worker/blob/49cc0270da5f12b8d7cb133b48ded39ed2e04778/extensions/Worker.Extensions.Http.AspNetCore/src/Coordinator/ContextReference.cs#L38), the task that signals the gRPC/functions pipeline to move backwards leads to a race condition as services may still be used in either pipeline.

Creating this issue to track investigation, design, and implementation of a solution to make sure both pipelines unwind correctly and objects are not disposed early. Related to #1929.