Bug 37550: CheckItemPreSave should run barcodes through barcodedecode

Bug 37550: CheckItemPreSave should run barcodes through barcodedecode

In Koha::Item we run a barcode through barcodedecode before any save.
We should do the same when checking barcodes to avoid a duplicate error
when the barcode is cleaned before it is written to the DB

To test:
1 - Follow previous test plan
2 - Note that after this patch is applied there is no exception
    All items are skipped as duplicate barcodes

Signed-off-by: Phil Ringnalda <phil@chetcolibrary.org>
Signed-off-by: Kyle M Hall <kyle@bywatersolutions.com>
Signed-off-by: Katrin Fischer <katrin.fischer@bsz-bw.de>