Avoid overspecialization of the SparseMatrixCSC * Diagonal product (#33352)

Author: ffevotte

stdlib/SparseArrays/src/linalg.jl

@@ -1360,7 +1360,7 @@ function copyinds!(C::AbstractSparseMatrixCSC, A::AbstractSparseMatrixCSC)
 end
 
 # multiply by diagonal matrix as vector
-function mul!(C::AbstractSparseMatrixCSC, A::AbstractSparseMatrixCSC, D::Diagonal{T, <:Vector}) where T
+function mul!(C::AbstractSparseMatrixCSC, A::AbstractSparseMatrixCSC, D::Diagonal)
     m, n = size(A)
     b    = D.diag
     (n==length(b) && size(A)==size(C)) || throw(DimensionMismatch())
@@ -1374,7 +1374,7 @@ function mul!(C::AbstractSparseMatrixCSC, A::AbstractSparseMatrixCSC, D::Diagona
     C
 end
 
-function mul!(C::AbstractSparseMatrixCSC, D::Diagonal{T, <:Vector}, A::AbstractSparseMatrixCSC) where T
+function mul!(C::AbstractSparseMatrixCSC, D::Diagonal, A::AbstractSparseMatrixCSC)
     m, n = size(A)
     b    = D.diag
     (m==length(b) && size(A)==size(C)) || throw(DimensionMismatch())