Bug 14007: Filter search result values to remove OpacHiddenItems values

Bug 14007: Filter search result values to remove OpacHiddenItems values

This change filters the values from the OpacHiddenItems syspref
out of their corresponding search results facets.

Note: This does not mean that all values from hidden items are filtered out of facets.
Rather, it just means that facet data that matches OpacHiddenItems is filtered out. This is
an imperfect fix, but it is a practical fix that has been requested by more than one library.

Test plan:
0. Apply the patch and koha-plack --restart kohadev
1. Go to http://localhost:8081/cgi-bin/koha/catalogue/detail.pl?biblionumber=29
2. Add an item with an item type of "Maps"
3. Go to http://localhost:8081/cgi-bin/koha/admin/preferences.pl?op=search&searchfield=OpacHiddenItems
4. Fill in OpacHiddenItems with the following:
itype: ['MP']
5. Go to http://localhost:8080/cgi-bin/koha/opac-search.pl?idx=&q=test&weight_search=1
6. Note that "Maps" does not appear in the "Item types" facet
7. Go to http://localhost:8081/cgi-bin/koha/catalogue/search.pl?q=test
8. Note that "Maps" does appear in the "Item types" facet

9. ***Repeat this test plan using both Elasticsearch and Zebra indexing***

10. prove -v t/Koha/SearchEngine/Search.t

Signed-off-by: David Nind <david@davidnind.com>
Signed-off-by: Kyle M Hall <kyle@bywatersolutions.com>
Signed-off-by: Katrin Fischer <katrin.fischer@bsz-bw.de>