Fix csc related bug in RdoToDigit
A crash was caused by CSC tools being initialized when no CSC inputs were detected in the Muon RdoToDigit converters. In order to prevent it from crashing, we now only initialize the CSC tools when the CSC converter is turned on implying CSCs in the inputs. This is required for NSW overlay as the MuonRdoToDigit algorithm will be called and crash with the absence of CSCs.
Edited by Alexandre Laurier