correct determination of selected locale during finalizing parameters

Helper/ParameterHelper.php

@@ -20,6 +20,7 @@
 use Symfony\Component\HttpFoundation\RequestStack;
 use function Symfony\Component\String\u;
 use Zikula\Bundle\CoreBundle\CacheClearer;
+use Zikula\Bundle\CoreBundle\Configurator;
 use Zikula\Bundle\CoreBundle\Helper\LocalDotEnvHelper;
 use Zikula\Bundle\CoreBundle\HttpKernel\ZikulaKernel;
 use Zikula\Bundle\CoreBundle\YamlDumper;
@@ -108,7 +109,7 @@ public function finalizeParameters(): bool
 
         $this->variableApi->getAll(VariableApi::CONFIG); // forces initialization of API
         if (!isset($params['upgrading']) || !$params['upgrading']) {
-            $this->variableApi->set(VariableApi::CONFIG, 'locale', $params['locale']);
+            $this->variableApi->set(VariableApi::CONFIG, 'locale', $this->getLocale());
             // Set the System Identifier as a unique string.
             if (!$this->variableApi->get(VariableApi::CONFIG, 'system_identifier')) {
                 $this->variableApi->set(VariableApi::CONFIG, 'system_identifier', str_replace('.', '', uniqid((string) (random_int(1000000000, 9999999999)), true)));
@@ -138,6 +139,14 @@ public function finalizeParameters(): bool
         return true;
     }
 
+    private function getLocale(): string
+    {
+        $configurator = new Configurator($this->projectDir);
+        $configurator->loadPackages('zikula_settings');
+
+        return $configurator->get('zikula_settings', 'locale');
+    }
+
     /**
      * Configure the Request Context
      * see https://symfony.com/doc/current/routing.html#generating-urls-in-commands