Fix WP_MOK hardcoded to 8 bytes, use storage_size for portability #4579

Job	Run time
Detect File Changes	7s
Lint Gate	1m 19s
Github (macos, mpi, no-debug, false)	19m 36s
Github (ubuntu, mpi, no-debug, true)	19m 29s
Github (ubuntu, mpi, debug, true)	19m 30s
Github (ubuntu, mpi, debug, false)	19m 28s
Github (ubuntu, no-mpi, single, no-debug, false)	19m 30s
Georgia Tech \| Phoenix (cpu)	19m 17s
Georgia Tech \| Phoenix (gpu-omp)	1s
Github (macos, mpi, debug, false)	9m 42s
Github (ubuntu, mpi, no-debug, false)	19m 30s
Georgia Tech \| Phoenix (gpu-acc)	19m 17s
Oak Ridge \| Frontier (AMD) (gpu-omp)	7m 14s
Oak Ridge \| Frontier (AMD) (cpu)	7m 14s
Oak Ridge \| Frontier (gpu-acc)	1s
Oak Ridge \| Frontier (gpu-omp)	1s
Oak Ridge \| Frontier (cpu)	19m 17s
	3h 20m 33s

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