[php-src] PR #23329: session: fix create_sid()/validateId() check depending on interface order

Pull Request: https://github.com/php/php-src/pull/23329 Author: lazerg session_handler_interface_gets_implemented() runs while SessionHandlerInterface is being attached to the class, so class->function_table only holds what the class itself declares. Interfaces listed after it have not contributed their abstract methods yet, which is why the warning fires or not depending on the order of the implements list. The check now also looks at the interface list, which zend_do_implement_interfaces() fills in before it starts calling the handlers. That covers sibling interfaces extending SessionIdInterface or SessionUpdateTimestampHandlerInterface too. Closes #23328