All Exceptions Showing up as RpcException for innermessage

Not sure if this belongs here or in the functions runtime repository, but when an exception is thrown in the Powershell Worker, when it reaches the logs/Application Insights, its innermost type is RpcException, meaning the exception type got lost in translation on the gRPC interface. This should pass through so that clear exceptions (InvalidOperationException, etc.) can be seen in application insights so issues can be triaged more quickly.

### Workaround
Use the telemetry client to throw the "original" exception in a try/catch, this however leads to the dilemma of having "duplicate" exceptions for the failure, or forcing the function to succeed so as to avoid duplication (but then the consequences of that in terms of discovery, queue retry, etc.)