[BUG] `TensorAlgebra.svd` drops sectors

[ogauthe]

The new svd interface introduced in ITensor/BlockSparseArrays.jl#111 drops sectors and dual:

using BlockArrays: Block
using GradedArrays: U1, gradedrange, dual
using TensorAlgebra: svd

g1 = gradedrange([U1(1)=>2])
m = zeros(g1, dual(g1))
m[Block(1,1)] = randn(2,2)
u, s, v = svd(m, (1, 2), (1,), (2,))
@test_broken u isa GradedArray
@test_broken s isa GradedArray
@test_broken v isa GradedArray

axes(s) isa Tuple{BlockedOneTo, BlockedOneTo}  # true