Use GSFTrackSlimmingToolCfg in EMBremCollectionBuilderCfg
Use equivalent configuration from https://gitlab.cern.ch/atlas/athena/-/blob/main/Tracking/TrkConfig/python/TrkTrackSlimmingToolConfig.py#L13
Use equivalent configuration from https://gitlab.cern.ch/atlas/athena/-/blob/main/Tracking/TrkConfig/python/TrkTrackSlimmingToolConfig.py#L13