Disable SimplifiedMaterialLocator in DD4HEP builds
This disables the SimplifiedMaterialLocator for dd4hep by replacing it by the DetailedMaterialLocator. This probably makes things awfully slow in places, but we will deal with that later.
Note that the configuration still uses the SimplifiedMaterialLocator: We just used DECLARE_COMPONENT_WITH_ID
to make it point to DetailedMaterialLocator, only for the dd4hep built.
Should (probably) be merged at the same time as LHCb!3565 (merged)
Edited by Christopher Rob Jones