Fix MUSCL THINC right-state using already-overwritten left-state values #4557

Job	Run time
Lint Gate	1m 16s
Detect File Changes	11s
Github (ubuntu, mpi, debug, false)	3h 48m 18s
Github (macos, mpi, no-debug, false)	1h 36m 6s
Oak Ridge \| Frontier (gpu-acc)	3h 27m 45s
Github (ubuntu, mpi, no-debug, true)	1h 34m 54s
Github (macos, mpi, debug, false)	56m 46s
Github (ubuntu, mpi, debug, true)	2h 4m 57s
Oak Ridge \| Frontier (AMD) (gpu-omp)	8h 6m 17s
Github (ubuntu, mpi, no-debug, false)	2h 18m 41s
Oak Ridge \| Frontier (gpu-omp)	1s
Georgia Tech \| Phoenix (gpu-omp)	8h 6m 17s
Github (ubuntu, no-mpi, single, no-debug, false)	28m 52s
Georgia Tech \| Phoenix (gpu-acc)	1s
Oak Ridge \| Frontier (cpu)	1s
Oak Ridge \| Frontier (AMD) (cpu)	8h 6m 17s
Georgia Tech \| Phoenix (cpu)	1s
	1d 16h 36m 41s

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