Replace xtensor with internal Tensor/View classes #7796

Job	Run time
filter-changes	6s
Python 3.11 (omp=y, mpi=n, dagmc=, libmesh=y, event=	2h 7m 18s
Python 3.11 (omp=n, mpi=n, dagmc=n, libmesh=n, event=n	1h 22m 10s
Python 3.13 (omp=n, mpi=n, dagmc=, libmesh=, event=	1h 1m 55s
Python 3.11 (omp=y, mpi=y, dagmc=, libmesh=y, event=	2h 42m 42s
Python 3.11 (omp=y, mpi=n, dagmc=n, libmesh=n, event=n	1h 45m 47s
Python 3.12 (omp=n, mpi=n, dagmc=, libmesh=, event=	1h 1m 42s
Python 3.11 (omp=y, mpi=n, dagmc=, libmesh=, event=y	2h 58m 46s
Python 3.11 (omp=y, mpi=y, dagmc=y, libmesh=, event=	1h 50m 26s
Python 3.11 (omp=n, mpi=y, dagmc=n, libmesh=n, event=n	1h 11m 17s
Python 3.11 (omp=y, mpi=y, dagmc=n, libmesh=n, event=n	1h 37m 21s
coverage	3s
Check CI status	2s
	17h 39m 35s

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