Fix auto-generated identifiers Service Bus clients to follow Azure SDK conventions

[tomas-pajurek]

Actual Azure SDK logic: https://github.com/Azure/azure-sdk-for-net/blob/main/sdk/servicebus/Azure.Messaging.ServiceBus/src/Diagnostics/DiagnosticUtilities.cs#L10

Affected clients:

• InMemoryServiceBusClient
• InMemoryServiceBusSender
• InMemoryServiceBusReceiver
• InMemoryServiceBusSessionReceiver

The correct logic might be available in the codebase after #59 is merged.