Fix cornernode normal #8343

Job	Run time
Build SU2 (BaseMPI)	13m 44s
Build SU2 (ReverseMPI)	10m 49s
Build SU2 (ForwardMPI)	9m 0s
Build SU2 (BaseNoMPI)	5m 55s
Build SU2 (ReverseNoMPI)	9m 26s
Build SU2 (ForwardNoMPI)	7m 56s
Build SU2 (asan) (BaseNoMPI-asan)	10m 58s
Build SU2 (BaseOMP)	6m 6s
Build SU2 (ReverseOMP)	11m 26s
Build SU2 (asan) (ReverseNoMPI-asan)	28m 43s
Build SU2 (ForwardOMP)	7m 52s
Build SU2 (tsan) (BaseOMP-tsan)	12m 13s
Build SU2 (tsan) (ReverseOMP-tsan)	27m 15s
Regression Tests	0s
Unit Tests	0s
Address Sanitizer Tests	0s
Thread Sanitizer Tests (hybrid_regression.py)	26m 36s
Thread Sanitizer Tests (hybrid_regression_AD.py)	11m 0s
	3h 18m 59s

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