Fix missing private clauses in 3D viscous GPU loops #4445

Job	Run time
Detect File Changes	9s
Lint Gate	1m 23s
Georgia Tech \| Phoenix (cpu)	13s
Oak Ridge \| Frontier (gpu-acc)	8h 59m 35s
Github (ubuntu, mpi, debug, false)	2h 18m 11s
Github (macos, mpi, no-debug, false)	1h 35m 14s
Github (ubuntu, no-mpi, single, no-debug, false)	28m 44s
Github (ubuntu, mpi, debug, true)	1h 41m 23s
Github (macos, mpi, debug, false)	59m 39s
Oak Ridge \| Frontier (AMD) (gpu-omp)	1s
Oak Ridge \| Frontier (gpu-omp)	1s
Github (ubuntu, mpi, no-debug, true)	1h 33m 1s
Oak Ridge \| Frontier (cpu)	1s
Georgia Tech \| Phoenix (gpu-omp)	4s
Github (ubuntu, mpi, no-debug, false)	2h 16m 30s
Georgia Tech \| Phoenix (gpu-acc)	12s
Oak Ridge \| Frontier (AMD) (cpu)	8h 59m 35s
Lint Gate	1m 23s
Oak Ridge \| Frontier (gpu-omp)	1s
Oak Ridge \| Frontier (AMD) (cpu)	1s
Oak Ridge \| Frontier (gpu-acc)	1s
Georgia Tech \| Phoenix (cpu)	45m 53s
Georgia Tech \| Phoenix (gpu-omp)	10m 0s
Oak Ridge \| Frontier (cpu)	1s
Oak Ridge \| Frontier (AMD) (gpu-omp)	1s
Georgia Tech \| Phoenix (gpu-acc)	1s
Detect File Changes	9s
Github (ubuntu, mpi, debug, false)	2h 18m 11s
Github (ubuntu, mpi, no-debug, false)	2h 16m 30s
Github (ubuntu, mpi, no-debug, true)	1h 33m 1s
Github (ubuntu, mpi, debug, true)	1h 41m 23s
Github (macos, mpi, no-debug, false)	1h 35m 14s
Github (macos, mpi, debug, false)	59m 39s
Github (ubuntu, no-mpi, single, no-debug, false)	28m 44s
	1d 16h 44m 9s

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