TA::heig errors with a 1 by 1 matrix

[ryanmrichard]

TA::TSpArrayD temp(world, {{0.53624}});
auto [eval, evec] = TA::heig(temp);

Errors with:

test_mp2: /home/ryan/CLionProjects/MP2/build/_deps/tiledarray-src/src/TiledArray/conversions/eigen.h:428: A TiledArray::eigen_to_array(madness::World&, const typename A::trange_type&, const Eigen::MatrixBase&, bool, std::shared_ptr) [with A = TiledArray::DistArray<TiledArray::Tensor<double, Eigen::aligned_allocator >, TiledArray::SparsePolicy>; Derived = Eigen::Matrix<double, -1, -1>; typename A::trange_type = TiledArray::TiledRange; typename Policy::pmap_interface = TiledArray::Pmap]: Assertion `trange.tiles_range().rank() == 1 && "TiledArray::eigen_to_array(): The number of dimensions in " "trange must match that of the Eigen matrix."' failed.

Note that GDB shows that the eigenvalues and eigenvectors ({0.53624} and {{1}} respectively) were computed correctly. I'll see if I can fix this because it's holding up progress on my two-electron system...