Fix G4 follower
This MR contains couple of fixes for the geant4 follower and updates to allow the MS FollowerHelper to change the entry and exit points for the follower. Details are discussed in ATLASRECTS-7868
This MR contains couple of fixes for the geant4 follower and updates to allow the MS FollowerHelper to change the entry and exit points for the follower. Details are discussed in ATLASRECTS-7868