AnalysisTop: Fix propagation of inefficiency boosted tagging SFs

This fixes bugs in inefficiency SFs for boosted tagging in AnalysisTop. The uncertainty on actual tagging efficiency propagated into inefficiency SFs is applied in a relative manner. We loop over systematic variations and apply them on the same shallow copy container, therebey accidentally bundling up various systematics effects together.

The fix is very simple -- have a separate shallow copy for each variation.