Fixed PHP 8.2 deprecation warnings: 'creation of dynamic property'.

[hostep]

Description

This fixes most PHP 8.2 deprecated usages of 'creation of dynamic property': https://www.php.net/manual/en/migration82.deprecated.php#migration82.deprecated.core.dynamic-properties

The phpstan tool is able to find these problems:

$ /path/to/phpstan analyse --level=0 src | grep 'Access to an undefined property'
  66     Access to an undefined property Magento\FunctionalTestingFramework\Allure\Adapter\MagentoAllureAdapter::$options.
  67     Access to an undefined property Magento\FunctionalTestingFramework\Allure\Adapter\MagentoAllureAdapter::$options.
  187    Access to an undefined property Magento\FunctionalTestingFramework\Allure\Adapter\MagentoAllureAdapter::$emptyStep.
  51     Access to an undefined property Magento\FunctionalTestingFramework\Config\Reader::$isValidated.
  68     Access to an undefined property Magento\FunctionalTestingFramework\ObjectManager\Config\Reader\Dom::$_idAttributes.
  68     Access to an undefined property Magento\FunctionalTestingFramework\ObjectManager\Config\Reader\Dom::$_perFileSchema.
  75     Access to an undefined property Magento\FunctionalTestingFramework\StaticCheck\CreatedDataFromOutsideActionGroupCheck::$actionGroupXmlFile.
  133    Access to an undefined property Magento\FunctionalTestingFramework\StaticCheck\CreatedDataFromOutsideActionGroupCheck::$actionGroupXmlFile.
  49     Access to an undefined property Magento\FunctionalTestingFramework\StaticCheck\UnusedEntityCheck::$errors.
  50     Access to an undefined property Magento\FunctionalTestingFramework\StaticCheck\UnusedEntityCheck::$output.
  622    Access to an undefined property Magento\FunctionalTestingFramework\StaticCheck\UnusedEntityCheck::$errors.
  632    Access to an undefined property Magento\FunctionalTestingFramework\StaticCheck\UnusedEntityCheck::$output.
  340    Access to an undefined property Magento\FunctionalTestingFramework\Test\Objects\TestObject::$customData.

$ /path/to/phpstan analyse --level=0 dev | grep 'Access to an undefined property'
  45     Access to an undefined property tests\unit\Magento\FunctionalTestFramework\Util\UnusedEntityCheckTest::$scriptUtil.
  85     Access to an undefined property tests\unit\Magento\FunctionalTestFramework\Util\UnusedEntityCheckTest::$scriptUtil.
  122    Access to an undefined property tests\unit\Magento\FunctionalTestFramework\Util\UnusedEntityCheckTest::$scriptUtil.
  167    Access to an undefined property tests\unit\Magento\FunctionalTestFramework\Util\UnusedEntityCheckTest::$scriptUtil.

Since I'm not familiar with this MFTF tool, please review all changes carefully.

Fixed Issues (if relevant)

1. https://github.com/magento/adobe-commerce-beta/issues/61

Contribution checklist

• [x] Pull request has a meaningful description of its purpose
• [x] All commits are accompanied by meaningful commit messages
• [ ] All new or changed code is covered with unit/verification tests (if applicable)
• [ ] All automated tests passed successfully (all builds are green)
• [ ] Changes to Framework doesn't have backward incompatible changes for tests or have related Pull Request with fixes to tests