[BUGFIX] Use Locale dependencies in Extbase LocalizationUtiltiy

Extbase uses the $alternativeLanguageKeys,
which previously omitted the actual language
chain for XLF files, because it did not
use the Locales->createLocale() method,
but instead just used new Locale().

Resolves: #100030
Releases: main
Change-Id: Ia663a00cb8e55d843678abddcd8d60bf46e336df
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/78192


Tested-by: Stefan Bürk <stefan@buerk.tech>
Reviewed-by: Stefan Bürk <stefan@buerk.tech>
Tested-by: Christian Kuhn <lolli@schwarzbu.ch>
Tested-by: core-ci <typo3@b13.com>
Reviewed-by: Christian Kuhn <lolli@schwarzbu.ch>