CreateInputsCrit: wrong id in error message

The id of the downstream station appears in the error message instead of the unknown upstream node id.

Example in vignette "Severn_03", if you swap the nodes 54095 and 54001 as direct injection nodes, the node 54001 is no longer a node simulated with a GR model and can't be used as a priori id for the node 54032:

'Each item of AprioriIds must be an id of a simulated node: the id "54032" is unknown