[php-src] Issue #13039: if($var = fn() && !fn()) behavior

Issue: https://github.com/php/php-src/issues/13039 Author: nextdebug ### Description The following code: ```php <?php if ($user = $res->fetch() && !$user->deleted_at) { } ``` Resulted in this output: ``` $user == true ``` But I expected this output instead: ``` $user = $res->fetch() ``` The assign operator behavior within the if-statement is unsafe, because the sometimes assign the object from $res->fetch, and another times assign the result of the logical test $res->fetch() && !$user->deleted_at ### PHP Version PHP 8.x ### Operating System Windows XAMPP