Sorting issue with filtered collection on callback

Hi,

I got an issue when i try to sort a callback column on a filtered collection.
This is a short code example for reproduce the issue (i don't use $id into the callback function here, because it's just for the example, but i use it in my application in order to retrieve an Eloquent collection object) :

....
public function columns()
{
   return [
          Column::name('name'),
          NumberColumn::callback('id', function ($id) {
             $arr = [1, 5, 10, 4, 0, 9, 0, 8, 7, 5, 14, 3, 0, 2];
             $collect = collect(array_rand($arr, 5));
             $results = $collect->filter(function ($item) {
                 return $item > 4;
             });
             return $results->count();
          }),
     ....
   ];
}

Start by reproducing the filtered-collection sorting behavior from the columns() example, focusing on the callback column and its returned collection. Trace how callback-column values are produced and sorted, then verify that sorting works correctly when the collection is filtered.