Add cascadeChildPaths, route children endpoint, and CwaFixtureBuilder #1505

Job	Run time
PHP-CS-Fixer (PHP 8.5)	18s
Behat (Symfony NEXT 8.2) (PHP 8.5)	4m 26s
Behat (Symfony 8.1) (PHP 8.5)	4m 45s
PHPUnit (Symfony 8.1) (PHP 8.5)	51s
Behat (Symfony ^7.4) (PHP 8.5) (lowest dependencies)	4m 2s
PHPUnit (Symfony NEXT 8.2) (PHP 8.5)	43s
PHPUnit (Symfony ^7.4) (PHP 8.5) (lowest dependencies)	36s
Behat (Symfony 7.4) (PHP 8.5)	4m 51s
PHPUnit (Symfony 7.4) (PHP 8.5)	1m 54s
	22m 26s

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