Bug 34282: Fix availability check in ILL batches

Bug 34282: Fix availability check in ILL batches

Staging modal area had issues listing availability checks for each request in the batch creation process

To test:
1) Run bash <(curl -s https://raw.githubusercontent.com/ammopt/koha-ill-dev/master/start-ill-dev-plus.sh)
2) Install a metadata enrichment plugin, e.g. https://github.com/PTFS-Europe/koha-plugin-api-pubmed/releases
3) Install and configure an availability plugin, e.g. eds https://github.com/PTFS-Europe/koha-plugin-ill-avail-eds/releases
4) Enable ILLCheckAvailability sys pref
5) Create a new ILL batch and input some pubmedids, i.e. 34898594, 31452466
6) Verify that the availability results show and are working, for each request in the batch

Signed-off-by: Edith Speller <Edith.Speller@ukhsa.gov.uk>
Sponsored-by: UKHSA (UK Health Security Agency)
Signed-off-by: Tomas Cohen Arazi <tomascohen@theke.io>
Signed-off-by: Katrin Fischer <katrin.fischer@bsz-bw.de>