Add direct fetch method for per-track value for standard tracking systematics
This small MR adds a complementary functionality to the public getTrackUncertainty method used for LRT efficiency systematic in the InclusiveTrackFilterTool, directly returning the relevant fraction for a given track and standard tracking systematic defined in the the TrackTruthFilterTool. This is not used directly in the standard "track-killing" operation of the tool or any production/derivation code and rather makes the derived uncertainty values from the tool available for use in downstream analysis code in the regime where the standard approach is prohibitive, as is currently done for the LRT efficiency.
Edited by Makayla Vessella