Nothing seems to use $wmgUseDualLicense, and all wikis are displaying the licensing of just CC BY SA...
'wikidata-copyright' => 'All structured data from the main and property namespace is available under the <a href="https://creativecommons.org/publicdomain/zero/1.0/" title="Definition of the Creative Commons CC0 License">Creative Commons CC0 License</a>; text in the other namespaces is available under the <a href="https://creativecommons.org/licenses/by-sa/3.0/" title="Definition of the Creative Commons Attribution/Share-Alike License">Creative Commons Attribution/Share-Alike License</a>; additional terms may apply. See <a href="https://wikimediafoundation.org/wiki/Terms_of_Use" title="Wikimedia Foundation Terms of Use">Terms of Use</a> for details.', 'wikimedia-copyrightwarning' => 'By clicking the "{{int:savearticle}}" button, you agree to the [https://wikimediafoundation.org/wiki/Terms_of_Use Terms of Use], and you irrevocably agree to release your contribution under the [https://en.wikipedia.org/wiki/Wikipedia:Text_of_Creative_Commons_Attribution-ShareAlike_3.0_Unported_License CC BY-SA 3.0 License] and the [https://en.wikipedia.org/wiki/Wikipedia:Text_of_the_GNU_Free_Documentation_License GFDL]. You agree that a hyperlink or URL is sufficient attribution under the Creative Commons license.',
Version: wmf-deployment
Severity: major