message: Use clusterizerv2 for embedding
  Due to modifications in the clusterizerv3 algorithm, it won't properly
  clusterize embedded cells. So we use clusterizerv2 for embedding. Note
  that the clusterization computation time is quite small compared to
  cluster-track matching, so the speed up if clusterizerv3 was made
  compatible won't make much difference.
diff: @@ -102,6 +102,8 @@ CellCombineCollections_combined:
  # Clusterizer
  Clusterizer:
  createHistos: true
  + # Clusterizerv3 won't properly clusterizer embedded cells without additional preprocessing, so use v2 instead.
  + clusterizer: kClusterizerv2
  Clusterizer_combined:
  enabled: true
  cellTimeMin: -50e-9
  