Fix compiler warnings related to tracking tools
This MR will fix the compiler warnings coming from the TrackVertexAssociationTool and InDetTrackSelectionTool packages as follow-up from !21047 (merged).
Most notably, the setCutLevel() method of the InDetTrackSelectionTool is no longer public, requiring the "CutLevel" to be set in the job options.
Edited by David Richard Shope