getAppPickerAdapter
Retrieves an adapter for the app picker.
This method creates and configures a ListAdapter with the current context and the defined ComposableStrategy. It also sets hasStableIds to true for better performance with RecyclerView.
Return
An instance of AbsAdapter (specifically, a ListAdapter) configured for the app picker.
Parameters
viewType
An integer representing the type of view for which the adapter is needed. Currently, this parameter is not used in the implementation but is part of the overridden method signature.