fdo#85954: Improvements to Simplified Chinese (zh-CN) locale data

Change-Id: I0ba08182f1c2b75a5b625f7858c23bcd8ba2dce5
Reviewed-on: https://gerrit.libreoffice.org/12284
Reviewed-by: Eike Rathke <erack@redhat.com>
Tested-by: Eike Rathke <erack@redhat.com>