Resolves: fdo#80327 Sound list box when non-English UI

Fallback strings are in English wheresas ImplGetThemeEntry expects localized strings
Let's put localized strings in fallback to make ImplGetThemeEntry happy

Cherry-picked from e4ca1f900a5585d35af04159bdd854f10b495355

Change-Id: I27dd992bac4f5aaf6e0e6237fe59dac990f11c92
Reviewed-on: https://gerrit.libreoffice.org/9845
Reviewed-by: Miklos Vajna <vmiklos@collabora.co.uk>
Tested-by: Miklos Vajna <vmiklos@collabora.co.uk>