Bug 38707: Patron restriction types from installer files not translatable

This patch makes translatable the default patron restriction
types that come installed with Koha.

To test:

1) Search for "Manual restriction" in the translation files

`git grep "Manual restriction" misc/translator/po/fr-CA-installer.po`

--> No results

2) Apply patch

3) Update translations

`gulp po:update --lang fr-CA`

4) Repeat step 1

--> Manual restrictions (as well as the other restriction types
    i.e. Overdues, Suspension, Discharge, and Notice failure
    suspension) is in the .po file

Signed-off-by: David Nind <david@davidnind.com>
Signed-off-by: Martin Renvoize <martin.renvoize@ptfs-europe.com>
Signed-off-by: Katrin Fischer <katrin.fischer@bsz-bw.de>
(cherry picked from commit d350979d6b)
Signed-off-by: Paul Derscheid <paul.derscheid@lmscloud.de>

installer/data/mysql/en/mandatory/patron_restriction_types.yml

@@ -22,7 +22,7 @@ description:
 
 tables:
   - restriction_types:
-      translatable: []
+      translatable: [ display_text ]
       multiline: []
       rows:
         - code: "MANUAL"