Update to a consistent definition of the r2 parameter for cones #4969

Job	Run time
Python 3.11 (omp=n, mpi=n, dagmc=n, ncrystal=n, libmesh=n, event=n vectfit=n)	1h 19m 43s
Python 3.11 (omp=y, mpi=n, dagmc=n, ncrystal=n, libmesh=n, event=n vectfit=n)	1h 41m 25s
Python 3.11 (omp=n, mpi=y, dagmc=n, ncrystal=n, libmesh=n, event=n vectfit=n)	1h 14m 47s
Python 3.11 (omp=y, mpi=y, dagmc=n, ncrystal=n, libmesh=n, event=n vectfit=n)	1h 28m 59s
Python 3.12 (omp=n, mpi=n, dagmc=, ncrystal=, libmesh=, event= vectfit=)	50m 20s
Python 3.13 (omp=n, mpi=n, dagmc=, ncrystal=, libmesh=, event= vectfit=)	52m 11s
Python 3.11 (omp=y, mpi=y, dagmc=y, ncrystal=, libmesh=, event= vectfit=)	57m 6s
Python 3.11 (omp=n, mpi=n, dagmc=, ncrystal=y, libmesh=, event= vectfit=)	1h 11m 14s
Python 3.11 (omp=y, mpi=y, dagmc=, ncrystal=, libmesh=y, event= vectfit=)	57m 12s
Python 3.11 (omp=y, mpi=n, dagmc=, ncrystal=, libmesh=y, event= vectfit=)	1h 12m 52s
Python 3.11 (omp=y, mpi=n, dagmc=, ncrystal=, libmesh=, event=y vectfit=)	57m 32s
Python 3.11 (omp=n, mpi=y, dagmc=, ncrystal=, libmesh=, event= vectfit=y)	1h 0m 40s
finish	0s
	13h 44m 1s

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