IgnoreErrorExtension is a valid conditional-tag

[staabm]

followup to #3783

hopefully fixes

24) PHPStan\Rules\PHPUnit\DataProviderDataRuleTest::testTrimmingArgs _PHPStan_b24b79311\Nette\DI\InvalidConfigurationException: Unexpected item 'conditionalTags › PHPStan\Type\PHPUnit\DataProviderReturnTypeIgnoreExtension › phpstan.ignoreErrorExtension'. phar:///Users/staabm/workspace/phpstan-phpunit/vendor/phpstan/phpstan/phpstan.phar/vendor/nette/di/src/DI/Compiler.php:219 phar:///Users/staabm/workspace/phpstan-phpunit/vendor/phpstan/phpstan/phpstan.phar/vendor/nette/di/src/DI/Compiler.php:178 phar:///Users/staabm/workspace/phpstan-phpunit/vendor/phpstan/phpstan/phpstan.phar/vendor/nette/di/src/DI/Compiler.php:158 phar:///Users/staabm/workspace/phpstan-phpunit/vendor/phpstan/phpstan/phpstan.phar/vendor/nette/di/src/DI/ContainerLoader.php:99 phar:///Users/staabm/workspace/phpstan-phpunit/vendor/phpstan/phpstan/phpstan.phar/vendor/nette/di/src/DI/ContainerLoader.php:65 phar:///Users/staabm/workspace/phpstan-phpunit/vendor/phpstan/phpstan/phpstan.phar/vendor/nette/di/src/DI/ContainerLoader.php:34 phar:///Users/staabm/workspace/phpstan-phpunit/vendor/phpstan/phpstan/phpstan.phar/src/DependencyInjection/Configurator.php:81 phar:///Users/staabm/workspace/phpstan-phpunit/vendor/phpstan/phpstan/phpstan.phar/vendor/nette/bootstrap/src/Bootstrap/Configurator.php:177 phar:///Users/staabm/workspace/phpstan-phpunit/vendor/phpstan/phpstan/phpstan.phar/src/DependencyInjection/Configurator.php:175 phar:///Users/staabm/workspace/phpstan-phpunit/vendor/phpstan/phpstan/phpstan.phar/src/DependencyInjection/ContainerFactory.php:107 phar:///Users/staabm/workspace/phpstan-phpunit/vendor/phpstan/phpstan/phpstan.phar/src/Testing/PHPStanTestCase.php:70 phar:///Users/staabm/workspace/phpstan-phpunit/vendor/phpstan/phpstan/phpstan.phar/src/Testing/PHPStanTestCase.php:105 phar:///Users/staabm/workspace/phpstan-phpunit/vendor/phpstan/phpstan/phpstan.phar/src/Testing/RuleTestCase.php:161 phar:///Users/staabm/workspace/phpstan-phpunit/vendor/phpstan/phpstan/phpstan.phar/src/Testing/RuleTestCase.php:95 

in phpstan/phpstan-phpunit#246

[ondrejmirtes]

Thank you!