Telemetry is not emitted if dispatch fails for {:error, :unregistered_command}

[leggebroten]

If a Command is dispatched to a Router it's not been registered with, the dispatch fails with {:error, :unregistered_command} but a Telemetry span is not created.

Is this intended or should I create an issue and fix? Proposal would be a span with error status.
(It seems we should be invoking [:commanded, :application, :dispatch], set :error and perhaps attaching an event since it's logging in that case)

When Command is not registered with Router

commanded/lib/commanded/commands/router.ex

Line 589 in 8ae9581

{:error, :unregistered_command}

Normal dispatch

commanded/lib/commanded/commands/dispatcher.ex

Line 49 in 897d153

start_time = telemetry_start(telemetry_metadata)

[davydog187]

@leggebroten this is not intended. Please fix if you have bandwidth :)

[leggebroten]

@davydog187 I should be able to start next week