array_key_exists() with objects is deprecated in php 7.4

[burki]

In Symfony 5.2

$options = $symfonyTranslator->getArgument(3);

in

SyliusThemeBundle/src/Translation/DependencyInjection/Compiler/TranslatorResourceProviderPass.php

Line 44 in b21b623

$options = $symfonyTranslator->getArgument(3);

returns an object of class Symfony\Component\DependencyInjection\Argument\AbstractArgument. Therefore, the following condition

if (!array_key_exists('resource_files', $options)) 

gives a depracation warning (https://wiki.php.net/rfc/deprecations_php_7_4#array_key_exists_with_objects)