reset method
Resets the list to the first page and clears all loaded items.
This method resets the filter skip value, clears the paging controller, and reloads the first page of data.
Implementation
Future<void> reset() async {
filter.skip = 0;
pagingController.nextPageKey = filter.skip;
pagingController.itemList = [];
await handlePageRequest(filter.skip);
}