Fix k_v and k_g module-level variables not initialized to dflt_real #4381

Job	Run time
Detect File Changes	13s
Lint Gate	1m 15s
Github (ubuntu, mpi, debug, true)	9m 20s
Github (macos, mpi, debug, false)	1s
Github (ubuntu, mpi, no-debug, false)	7m 52s
Oak Ridge \| Frontier (gpu-omp)	1s
Oak Ridge \| Frontier (AMD) (cpu)	1s
Georgia Tech \| Phoenix (cpu)	38m 14s
Oak Ridge \| Frontier (AMD) (gpu-omp)	38m 14s
Github (ubuntu, mpi, no-debug, true)	15m 39s
Oak Ridge \| Frontier (gpu-acc)	38m 14s
Oak Ridge \| Frontier (cpu)	1s
Github (ubuntu, mpi, debug, false)	6m 3s
Github (macos, mpi, no-debug, false)	38m 14s
Georgia Tech \| Phoenix (gpu-acc)	38m 14s
Georgia Tech \| Phoenix (gpu-omp)	1s
Github (ubuntu, no-mpi, single, no-debug, false)	3m 43s
	3h 55m 20s

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