Datatable: Sort mode multiple - undefined breaks order

[MalikBen]

Describe the bug

Hi, I think I've found a bug using the multiple sort-mode.
When a value is undefined into the list, the sorting is broken.

You can see the reproduction here where the third row has an undefined quantity. If you sort by quantity, the order is not good, the row with the undefined value should be at the top or a the bottom of the list.

Reproducer

https://codesandbox.io/s/primevue-demo-forked-lv8klr?file=/src/App.vue

PrimeVue version

3.35.0

Vue version

3.x

Language

TypeScript

Build / Runtime

Vue CLI App

Browser(s)

No response

Steps to reproduce the behavior

1. Sort by quantity, ASC or DESC

Expected behavior

The row with the undefined value should be at the top or a the bottom of the list.

[MalikBen]

Note that null values don't brake the order, only undefined values