Bug 23406: Don't translate suppressed authorised values

Bug 23406: Don't translate suppressed authorised values

We have a test in C4/XSLT/transformMARCXML4HTML which is meant to exclude the 942n, however,
it doesn't work because it checks the $subfield parameter against n

$subfield is an arrayref with the code and value as members

we need to check $subfield->[0]

To test:
 1 - Apply only unit tests
 2 - prove -v t/db_dependent/XSLT.t
 3 - It fails
 4 - Confirm 952$n in default framework is tied ot authorised value 'YES_NO' or do so
 5 - Set OpacSuppression to 'Hide'
 6 - Edit a record in the default template, changing 942$n to 'Yes
 7 - Confirm the record is suppressed in opac
 8 - Note there is no suppression notice in the record in staff client
 9 - Apply second patch
10 - Reload and confirm staff side shows suppression notice
11 - Confirm record still suppressed in OPAC
12 - Edit record, set 942$n to 'no'
13 - Confirm there is no suppression notice in staff client
14 - Confirm you can view the record in OPAC
15 - prove -v t/db_dependent/XSLT.t
16 - Tests pass!

Signed-off-by: Phil Ringnalda <phil@chetcolibrary.org>
Signed-off-by: Katrin Fischer <katrin.fischer.83@web.de>
Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>
(cherry picked from commit 91fb5d6a1548f7b270163d18b05467c6fd45a7f0)
Signed-off-by: Fridolin Somers <fridolin.somers@biblibre.com>