Correct pixel delta ray threshold in pixel digitisation

Correct pixel delta ray threshold in pixel digitisation and some comments to highlight that there is a link between the range cut in simulation and the energy threshold in the digitisation.

@battagl @stsuno @gfacini @srettie @vcairo

InnerDetector/InDetDigitization/PixelDigitization/python/ITkPixelDigitizationConfig.py

@@ -36,7 +36,7 @@ def ITkPixel_LastXing(flags):
 def ITkEnergyDepositionToolCfg(flags, name="ITkEnergyDepositionTool", **kwargs):
     """Return a configured EnergyDepositionTool"""
     acc = ITkPixelDistortionAlgCfg(flags)
-    kwargs.setdefault("DeltaRayCut", 80.)
+    kwargs.setdefault("DeltaRayCut", 80.7687)
     kwargs.setdefault("nCols", 5)
     kwargs.setdefault("LoopLimit", 100000)
     kwargs.setdefault("doBichsel", True)