Fix/mhd cleaning speed #4462

Job	Run time
Lint Gate	1m 19s
Detect File Changes	11s
Github (ubuntu, mpi, no-debug, false)	2h 14m 54s
Github (macos, mpi, debug, false)	52m 5s
Github (ubuntu, mpi, debug, true)	1h 10m 13s
Github (ubuntu, mpi, no-debug, true)	1h 33m 12s
Oak Ridge \| Frontier (gpu-omp)	2h 43m 19s
Github (ubuntu, no-mpi, single, no-debug, false)	28m 53s
Georgia Tech \| Phoenix (cpu)	16s
Github (macos, mpi, no-debug, false)	1h 21m 8s
Oak Ridge \| Frontier (cpu)	1s
Georgia Tech \| Phoenix (gpu-omp)	14s
Github (ubuntu, mpi, debug, false)	2h 3m 17s
Oak Ridge \| Frontier (AMD) (gpu-omp)	1s
Oak Ridge \| Frontier (AMD) (cpu)	1s
Georgia Tech \| Phoenix (gpu-acc)	2h 43m 19s
Oak Ridge \| Frontier (gpu-acc)	1s
	15h 12m 24s

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