Update EGamma reco config to run without tracker

Self-explanatory. egammaTopoClusterCopierCfg is added to the main egamma reco config, as it is otherwise only scheduled from InDetCaloClusterROISelectorConfig.

FYI @christos @nsur @gtarna

Reconstruction/egamma/egammaAlgs/python/egammaRecBuilderConfig.py

-# Copyright (C) 2002-2022 CERN for the benefit of the ATLAS collaboration
+# Copyright (C) 2002-2023 CERN for the benefit of the ATLAS collaboration
 
 __doc__ = """
           Instantiate egammaRecBuilder with default configuration
@@ -20,6 +20,9 @@ def egammaRecBuilderCfg(
     seqkw = {'sequence': sequenceName} if sequenceName else {}
     acc = ComponentAccumulator (**seqkw)
 
+    kwargs.setdefault("doTrackMatching", flags.Egamma.doTracking)
+    kwargs.setdefault("doConversions", flags.Egamma.doConversionBuilding)
+
     if "TrackMatchBuilderTool" not in kwargs:
         emtrkmatch = EMTrackMatchBuilderCfg(flags)
         kwargs["TrackMatchBuilderTool"] = acc.popToolsAndMerge(emtrkmatch)