RecExCommon: Fix for InDetForwardTrackParticle thinning.
Do not schedule ThinInDetForwardTrackParticles if we're reading from ESD and InDetForwardTrackParticles is not in the input file.
Fixes failure seen in q223.
Do not schedule ThinInDetForwardTrackParticles if we're reading from ESD and InDetForwardTrackParticles is not in the input file.
Fixes failure seen in q223.