The source project of this merge request has been removed.
This change fixes an error in the new detector description which arises during digitization.
In the context of the "newDD" (not yet in production) the class MuonGeoModel::Mdt is now used to initialize certain data which is part of the Mdt readout geometry. It does so without building any geometry, because in the newDD, the geometry is already built and simply restored.