fixup: BC created before ghost particles are incorrect #475

Job	Run time
HIP (hipcc, Release, 3.7.02)	4m 7s
CUDA (Release, 3.7.02)	5m 39s
CI (ubuntu:latest, g++, SERIAL, Debug, 3.7.02, HDF5)	1m 53s
CI (ubuntu:latest, g++, SERIAL, Release, 3.7.02, HDF5)	2m 8s
CI (ubuntu:latest, g++, OPENMP, Debug, 3.7.02, HDF5)	2m 1s
CI (ubuntu:latest, g++, OPENMP, Release, 3.7.02, HDF5)	2m 13s
CI (ubuntu:latest, clang++, SERIAL, Debug, 3.7.02, HDF5)	1m 33s
CI (ubuntu:latest, clang++, SERIAL, Release, 3.7.02, HDF5)	2m 4s
CI (ubuntu:latest, clang++, OPENMP, Debug, 3.7.02, HDF5)	1m 47s
CI (ubuntu:latest, clang++, OPENMP, Release, 3.7.02, HDF5)	2m 3s
CI (ubuntu:latest, g++, SERIAL, Debug, 3.7.02, SILO)	1m 45s
CI (ubuntu:latest, g++, SERIAL, Debug, 3.7.02, NONE)	1m 43s
CI (ubuntu:latest, g++, SERIAL, Debug, 3.7.02, BOTH)	1m 47s
	30m 43s

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