fixup! fixup! PES-2404: Fixes reported by phpstan level 6 in Packeter…

…y/Module - Updated arrays and return types for better code clarity and static analysis accuracy. Removed unnecessary method parameter in TranslationTrait.

src/Packetery/Module/Upgrade.php

@@ -258,7 +258,7 @@ private function migrateWpOrderMetadata(): void {
 				],
 			]
 		);
-		// is iterable? throw exception if not?
+
 		foreach ( $orders as $order ) {
 			$orderEntity = new Core\Entity\Order(
 				(string) $order->get_id(),