reuse existing translation to be backportable wrt no new translations

Change-Id: I1fb94f66d696f836e8f6a10ba2d6933f69cfac95
Reviewed-on: https://gerrit.libreoffice.org/56225Reviewed-by: Caolán McNamara <caolanm@redhat.com>
Tested-by: Caolán McNamara <caolanm@redhat.com>