returns an array if there are multiple to be able to handle plural forms

Classes/Http/TranslationRequestMiddleware.php

@@ -157,7 +157,15 @@ class TranslationRequestMiddleware implements MiddlewareInterface
                 \ARRAY_FILTER_USE_KEY
             );
             $result[$package] += \array_map(
-                static fn($value) => $value[0]['target'],
+                static function ($value) {
+                    if (\count($value) === 1) {
+                        return $value[0]['target'];
+                    }
+                    return \array_map(
+                        static fn ($value) => $value['target'],
+                        $value
+                    );
+                },
                 $matchingUnits
             );
         }