Change wiring diagram command to create a real consensus layer

The wiring diagram command (and wiring tests) currently create the consensus layer with no-op implementations or null value for inputs and duplicate the code that creates the consensus layer. This approach requires the existence of no-op implementations and "fake" instances.

Change both locations to create a real instance of the consensus layer, eliminating the need for no-op implementations and "fake" instances.

Inspect the wiring diagram command and the wiring tests, locating the two places that construct the consensus layer and comparing them with the existing real-instance construction. Run the wiring tests before and after the change. Done means both locations create a real consensus-layer instance without no-op implementations, null inputs, or fake instances.

Written by the indexing model from the issue text.