[php-src] Issue #9921: php_admin_value[extension] = ext.so in fpm config does not register module handlers

Issue: https://github.com/php/php-src/issues/9921 Author: bwoebi ### Description Specifying php_admin_value[extension] = ext.so in fpm config will execute MINIT, then RINIT of a PHP module. But it won't execute RSHUTDOWN and post_deactivate handlers (as these aren't collected). Also it won't execute RINIT on any subsequent requests after the first one. This might be acceptable in the case of dl() in CLI processes, but in php-fpm it will just carry along. This leads to all sorts of interesting misbehaviours. ### PHP Version master ### Operating System _No response_