Multi sort seems not to work

Hello,

I'm trying to implement multi sort, but it doesn't seems to work:

It works:
```

Trier par
Section

```

It doesn't work:
```

Trier par

```
It's seems parameters are taken by jplist:

But the program just put the list to the loading state and doesn't made any sorting.

The issue is about multi-sort not working in jPList. Look at the HTML examples provided: the first works, the second (with data-path1, data-order1, data-type1) does not. Examine the jPList source code for sort handling, likely in the core jquery.jplist.js or related sort modules. Check how multi-sort parameters are parsed and applied. The bug may be in parameter reading or sorting logic. Test by creating a simple HTML list with the multi-sort markup and debugging the jPList behavior in the browser console.

Written by the indexing model from the issue text.