Make ancestorClass option consistency to underscore #164

Job	Run time
check	9s
PHP-CS-Fixer	10s
Twig-CS-Fixer	6s
PHPStan	21s
PHP 8.2 tests (No Symfony specified)	12s
PHP 8.1 tests (No Symfony specified)	16s
PHP 8.3 tests (No Symfony specified)	11s
PHP 8.4 tests (Dev deps)	12s
PHP 8.4 tests (No Symfony specified)	14s
PHP 8.1 tests (Symfony 6)	11s
PHP 8.5 tests (No Symfony specified)	13s
PHP 8.1 tests (Lowest deps)	14s
	2m 29s

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