Merge branch '21.0-setFwdTPThinningToDefault' into '21.0'

Switch InDetForwardTrackParticle thinning to be active by default

See merge request atlas/athena!10291

Former-commit-id: 41e65989fe2efca4c7065a6f3df56350c4e78116

PhysicsAnalysis/AnalysisCommon/ParticleBuilderOptions/python/AODFlags.py

@@ -92,7 +92,7 @@ class ThinInDetForwardTrackParticles(JobProperty):
     """
     statusOn=True
     allowedTypes=['bool']
-    StoredValue=False
+    StoredValue=True
 
  
 class Muon(JobProperty):