BUG: multroot failing with BigFloat

[KlausC]

julia> pb = BigInt[-1, 2, -1]
3-element Vector{BigInt}:
 -1
  2
 -1

julia> Polynomials.Multroot.multroot(Polynomials.Polynomial(pb))
ERROR: UndefRefError: access to undefined reference
Stacktrace:
  [1] getindex
    @ ./essentials.jl:917 [inlined]
  [2] getindex
    @ ./array.jl:930 [inlined]
  [3] getindex
    @ ~/.julia/juliaup/julia-1.11.3+0.x64.linux.gnu/share/julia/stdlib/v1.11/LinearAlgebra/src/triangular.jl:286 [inlined]
  [4] copyto!(A::UpperTriangular{BigFloat, Matrix{BigFloat}}, B::UpperTriangular{BigFloat, Matrix{BigFloat}})
    @ LinearAlgebra ~/.julia/juliaup/julia-1.11.3+0.x64.linux.gnu/share/julia/stdlib/v1.11/LinearAlgebra/src/triangular.jl:551
  [5] copy
    @ ~/.julia/juliaup/julia-1.11.3+0.x64.linux.gnu/share/julia/stdlib/v1.11/LinearAlgebra/src/triangular.jl:190 [inlined]
  [6] refine_uvw!(u::Polynomials.MutableDenseViewPolynomial{…}, v::Polynomials.MutableDenseViewPolynomial{…}, w::Polynomials.MutableDenseViewPolynomial{…}, p::Polynomials.MutableDenseViewPolynomial{…}, q::Polynomials.MutableDenseViewPolynomial{…}, uv::Polynomials.MutableDenseViewPolynomial{…}, uw::Polynomials.MutableDenseViewPolynomial{…})
    @ Polynomials.NGCD ~/.julia/packages/Polynomials/kryT1/src/polynomials/ngcd.jl:543

A bug is found in ngcd.jl:543

where an uninitialized matrix of BigFloat is tried to be copyed.