Bug 34171: Use barcodedecode when attaching items to another record

Bug 34171: Use barcodedecode when attaching items to another record

Bug 26351 added barcodecode that transforms scanned barcodes either
by using itemBarcodeInputFilter  or via a plugin to various pages in
Koha, including checkout and checkin. But the feature for attaching
items to a new record was missed.

To test:
* Add an item with barcode "ab" to any record
* Set itemBarcodeInputFilter to "Remove spaces from"
* Search for another record in the catalog
* Edit > attach item > "a b"
* The item is not found.
* Apply patch, restart_all
* Try again with "a b"
* Verify that the item is found and attached to the record

Signed-off-by: Michaela Sieber <michaela.sieber@kit.edu>
Signed-off-by: Marcel de Rooy <m.de.rooy@rijksmuseum.nl>
Signed-off-by: Tomas Cohen Arazi <tomascohen@theke.io>