[php-src] Issue #12408: Session constant SID changes its value

Issue: https://github.com/php/php-src/issues/12408 Author: jorgsowa ### Description I'm not sure how to classify this problem, but the constant SID changes its value during the request. I understand the logic behind the changes, but that's just against the rules what constant is. It shouldn't change it's value. Example: https://3v4l.org/4s0Nm ``` $isd0 = defined('SID'); ini_set('session.use_cookies', 0); ini_set('session.use_only_cookies', 0); session_start(); $sid1 = SID; session_destroy(); session_start(); $sid2 = SID; var_dump($isd0); var_dump($sid1); var_dump($sid2); ``` ### PHP Version All versions ### Operating System _No response_