[php-src] Issue #10673: Preloading has no defined io-stream constants

Issue: https://github.com/php/php-src/issues/10673 Author: SCIF ### Description As of https://www.php.net/manual/en/features.commandline.io-streams.php , there should be constants defined in CLI. Added the following to preload.ini: ``` opcache.preload_user=www-data opcache.preload=/path/to/preload.php ``` The following code wrote to preload.php: ```php <?php var_dump(defined('STDIN')); var_dump(defined('STDOUT')); var_dump(defined('STDERR')); ``` Resulted in this output: ``` /path/to/preload.php:3: bool(false) /path/to/preload.php:4: bool(false) /path/to/preload.php:5: bool(false) ``` But I expected this output instead: ``` /path/to/preload.php:3: bool(true) /path/to/preload.php:4: bool(true) /path/to/preload.php:5: bool(true) ``` I could imagine this is the expected behavior but docs should be updated then. :) There are no restrictions defined in https://www.php.net/manual/en/opcache.preloading.php BTW, the opcache_enabled shown as false for var_dump(opcache_get_status(false));. ### PHP Version 8.1.16 ### Operating System Docker image: php:8.1-fpm-bullseye