fix: bug in ITk config (#1961)

Recently I changed deltaZMax in ITk configuration, but I should have changed only for PPP and not for SSS as well.
@CarloVarni I believe this is the reason for the higher number of SSS seeds that we were seeing. Sorry for that

Examples/Python/python/acts/examples/itk.py

@@ -308,7 +308,6 @@ def itkSeedingAlgConfig(inputSpacePointsType: InputSpacePointsType):
     bFieldInZ = 2 * u.T
     deltaRMin = 20 * u.mm
     maxPtScattering = float("inf") * u.GeV
-    deltaZMax = float("inf") * u.mm
     zBinEdges = [
         -3000.0,
         -2500.0,
@@ -378,6 +377,7 @@ def itkSeedingAlgConfig(inputSpacePointsType: InputSpacePointsType):
         deltaRMax = 280 * u.mm
         deltaRMaxTopSP = 280 * u.mm
         deltaRMaxBottomSP = 120 * u.mm
+        deltaZMax = float("inf") * u.mm
         interactionPointCut = True
         arithmeticAverageCotTheta = False
         impactMax = 2 * u.mm
@@ -441,6 +441,7 @@ def itkSeedingAlgConfig(inputSpacePointsType: InputSpacePointsType):
         deltaRMax = 600 * u.mm
         deltaRMaxTopSP = 300 * u.mm
         deltaRMaxBottomSP = deltaRMaxTopSP
+        deltaZMax = 900 * u.mm
         interactionPointCut = False
         arithmeticAverageCotTheta = True
         impactMax = 20 * u.mm