Avoid errors from MCTrackInfo without UT
Forcing buildMCTrackInfo.WithUT to be always False, in order to prevent the error
RuntimeError: Need one of TT or UT to build MCTrackInfo or BuildMCTrackInfo:: Exception throw: get():: No valid data at 'Raw/UT/Clusters' StatusCode=FAILURE
related to LHCBGAUSS-2571
Edited by Gloria Corti