Merge branch '21.0-digiFlag' into '21.0'

Now that Pixel Radiation Damage Digitizer is available in 21.0, use existing…

See merge request atlas/athena!12045

Former-commit-id: be20518f5f3f20f9690da5a927f40fcfba75e421

Simulation/Digitization/python/DigiAlgConfig.py

@@ -85,6 +85,8 @@ def getStandardInDetPileUpTools():
             PileUpToolsList += [ "PixelLightDigitizationTool" ]
         elif 'doSmearedPixelDigi' in digitizationFlags.experimentalDigi():
             PileUpToolsList += [ "PixelSmearedDigitizationTool" ]
+        elif digitizationFlags.doRadiationDamage():
+            PileUpToolsList += [ "PixelRadDamDigitizationTool" ]
         else:
             PileUpToolsList += [ "PixelDigitizationTool" ]
     if DetFlags.digitize.SCT_on():