Function to_dense_in_ctx 

pub fn to_dense_in_ctx<B, C, T>(
    ctx: &mut C,
    tensor: &StructuredTensor<T>,
) -> Result<Tensor<T>>
where
    T: StructuredEinsumRuntimeValue,
    B: StructuredDenseEinsumBackend<T, C>,
    C: TensorTempPoolContext,