Clean-up of ConfigFlags.Detector.SimulateXXX usage

This merge request follows on from !41181 (merged). Now all usage of ConfigFlags.Detector.Simulate is removed and replaced with either ConfigFlags.Detector.Geometry (for cases related to building the detector and how the detector is simulated) or ConfigFlags.Detector.Enable (for cases related to SensitiveDetectors and writing out Sim Hit Collections). This reduces the granularity of the configuration slightly, as it removes the ability to switch on a sensitive detector without writing out the Sim Hits, but such configurations were only used in local debugging/profiling and can be manually configured in such cases.
(Needs to go in after !41291 (merged)) FYI @dnoel, @bleban.

AtlasGeometryCommon/SubDetectorEnvelopes/python/SubDetectorEnvelopesConfigNew.py

@@ -27,7 +27,7 @@ def EnvelopeDefSvcCfg(ConfigFlags, name="AtlasGeometry_EnvelopeDefSvc", **kwargs
     BeamPipe = Volume()
     BeamPipe.addRZ(   34.3,   3475.0 )
 
-    if ConfigFlags.Detector.SimulateHGTD:
+    if ConfigFlags.Detector.GeometryHGTD:
         BeamPipe.addRZ(   47.0,   3475.0 )
         BeamPipe.addRZ(   47.0,   3535.0 )
         BeamPipe.addRZ(  120.0,   3535.0 )
@@ -62,7 +62,7 @@ def EnvelopeDefSvcCfg(ConfigFlags, name="AtlasGeometry_EnvelopeDefSvc", **kwargs
     Calo = Volume()
     Calo.addRZ( 1148.0,  3475.0 )
 
-    if ConfigFlags.Detector.SimulateHGTD:
+    if ConfigFlags.Detector.GeometryHGTD:
         Calo.addRZ(   47.0,  3475.0 )
         Calo.addRZ(   47.0,  3535.0 )
         Calo.addRZ(  120.0,  3535.0 )