Fix WP_MOK hardcoded to 8 bytes, use storage_size for portability #4570

Job	Run time
Lint Gate	1m 19s
Detect File Changes	13s
Github (ubuntu, mpi, debug, false)	4h 57m 9s
Oak Ridge \| Frontier (gpu-acc)	1s
Oak Ridge \| Frontier (cpu)	1s
Github (ubuntu, no-mpi, single, no-debug, false)	28m 53s
Github (macos, mpi, debug, false)	1h 19m 8s
Oak Ridge \| Frontier (gpu-omp)	7h 7m 16s
Github (ubuntu, mpi, no-debug, true)	1h 38m 42s
Georgia Tech \| Phoenix (cpu)	3m 5s
Github (ubuntu, mpi, debug, true)	1h 57m 46s
Georgia Tech \| Phoenix (gpu-acc)	1h 39m 48s
Github (ubuntu, mpi, no-debug, false)	2h 15m 51s
Github (macos, mpi, no-debug, false)	1h 28m 29s
Georgia Tech \| Phoenix (gpu-omp)	7h 7m 16s
Oak Ridge \| Frontier (AMD) (gpu-omp)	7h 7m 16s
Oak Ridge \| Frontier (AMD) (cpu)	7h 7m 16s
	1d 20h 19m 29s

Provide feedback