Registering more than one logical publisher for an event type is against best practices

[timbussmann]

Describe the suggested improvement

Originally raised by @boblangley, moving this to the NServiceBus repo as a new issue.

NServiceBus does not prevent a user from registering more than one logical publisher for a given event type.

This is contrary to our own documented best practices regarding events and ADSD.

As a SOA trained user I would expect the API reject multiple logical publishers for a given event by default. As an experienced NServiceBus user I would expect to be able to disable this using the best practice enforcement option.

Additional Context

No response