Collection Engine Undefined array key 0 error

[amir9480]

• Scout Version: 9.4
• Scout Driver: Collection
• PHP Version: 8.1

Description:

When using collection engine and paginate with query callback together Undefined array key 0 error exception happens.

Steps To Reproduce:

1. Make a searchable model and change SCOUT_ENGINE to collection
2. Perform a search on the model with a query callback and use paginate to get results. (without query callback, everything works fine.)

SearchableUserModel::search('laravel')->query($queryFunction)->paginate();

3. Now go to page 2, on page 1 everything also works fine.
4. Now you should see ErrorException: Undefined array key 0 at https://github.com/laravel/scout/blob/v9.4.3/src/Engines/CollectionEngine.php#L170