[BUGFIX] Use proper in_array() call in LanguagePackService

Resolves: #90836
Releases: 9.5
Change-Id: I6ad3c02a792ba2bdc94916ba983270a5ad6c5326
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/63928
Reviewed-by: Susanne Moog <look@susi.dev>
Reviewed-by: Andreas Fernandez <a.fernandez@scripting-base.de>
Reviewed-by: David Rellstab <david@rellstab.li>
Reviewed-by: Oliver Klee <typo3-coding@oliverklee.de>
Reviewed-by: Oliver Hader <oliver.hader@typo3.org>
Tested-by: Andreas Fernandez <a.fernandez@scripting-base.de>
Tested-by: TYPO3com <noreply@typo3.com>
Tested-by: Oliver Hader <oliver.hader@typo3.org>

typo3/sysext/install/Classes/Service/LanguagePackService.php

@@ -247,7 +247,7 @@ public function languagePackDownload(string $key, string $iso): string
             throw new \RuntimeException('Language pack baseUrl not found', 1520169691);
         }
 
-        if (in_array(self::OLD_LANGUAGE_PACK_URLS, $languagePackBaseUrl, true)
+        if (in_array($languagePackBaseUrl, self::OLD_LANGUAGE_PACK_URLS, true)
             && GeneralUtility::makeInstance(Features::class)->isFeatureEnabled('newTranslationServer')) {
             $languagePackBaseUrl = self::LANGUAGE_PACK_URL;
         }