[php-src] Issue #8167: PHP 8.1.3 *Iterator bug

Issue: https://github.com/php/php-src/issues/8167 Author: Vermond125 ### Description An original weird behavior was found in doctrine/persistence/lib/Doctrine/Persistence/Mapping/Driver/AnnotationDriver.php, but is related to php base classes. I have 47 files, but this code finds only one of them. To fix this, I can simply put an additional line after the $iterator is defined: ```php foreach ($iterator as $file) {} ``` It makes no sence other than internal warmup of some sort, but after it in the next loop I can actually see all 47 files. The following code: ```php <?php // ... $iterator = new RegexIterator( new RecursiveIteratorIterator( new RecursiveDirectoryIterator($path, FilesystemIterator::SKIP_DOTS), RecursiveIteratorIterator::LEAVES_ONLY ), '/^.+' . preg_quote($this->fileExtension) . '$/i', RecursiveRegexIterator::GET_MATCH ); foreach ($iterator as $file) { ``` Resulted in this output: ``` 1 file found ``` But I expected this output instead: ``` 47 files found ``` ### PHP Version PHP 8.1.3 ### Operating System Ubuntu 20.04.1