[php-src] Issue #12060: internal iterator rewind handler is called twice

Issue: https://github.com/php/php-src/issues/12060 Author: ju1ius ### Description Hi, The InternalIterator class (in zend_interfaces.c) uses an internal rewind_called flag to ensure that internal iterators are always rewound. This flag is checked by the zend_internal_iterator_ensure_rewound function, in the following methods: * InternalIterator::current() * InternalIterator::key() * InternalIterator::next() * InternalIterator::valid() However, in the InternalIterator::rewind() method, the rewind_called flag is not properly set when the iterator has a rewind handler. As a result, the internal iterator's rewind handler is always called twice on first iteration. This is problematic since internal iterators can perform potentially heavy initialization logic in the rewind handler (like performing a query in the case of a database result-set iterator). ### PHP Version PHP 8.3-dev ### Operating System irrelevant