Use same BremRecovery config flag for TRT extension and silicon tracking

This MR updates the TRT extension config to have the tryBremFit parameter set using the same flag as for the silicon tracking, as in https://gitlab.cern.ch/atlas/athena/-/blob/main/Tracking/TrkConfig/python/TrkAmbiguityProcessorConfig.py#L84 https://gitlab.cern.ch/atlas/athena/-/blob/main/InnerDetector/InDetConfig/python/SiTrackMakerConfig.py#L47

In practice this doesn't matter because the Brem recovery in the TRT extension was anyway only run in case it was run in the silicon tracking of the track but this avoids headaches when looking at the config and discovering that the tryBremFit parameter is set to False for the silicon tracking but True for TRT.