Without this, zh-Hant-TW locale used via the LibreOfficeKit was reduced
to zh-Hant and further to zh, which was interpreted as zh-CN, causing
incorrect strings particularly in the sidebar.
Change-Id: I58e53f71d13824e422a7b3634f3822d55090f8ee
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/99203
Tested-by: Jenkins
Reviewed-by: Andras Timar <andras.timar@collabora.com>