Fix for precision error when computing Jet Tagging efficiency for Truth Tagging in PCBT mode
While computing efficiency for a given WP in PCBT mode (as a sum of the corresponding bin efficiencies), the MC Efficiency sometimes ends up being larger than 1 (precision error). This MR implements a check to handle such situations. (The issue only arises during computing Truth tagging weights)
Edited by Nilotpal Kakati