Fixing a bug in (unused) Radiation damage simulation type + speedup of the code

Merged Tomas Dado requested to merge tdado/athena:PixelRadiationDamage into master

The bug impacts the "Template correction" path which is meant for ITk pixel in the future. The issue was that the lorentz angle was not recalculated properly in this case.

Also some minor speed up improvements are included

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