[php-src] Issue #9227: Filenames with leading dots or spaces are not properly handled

Issue: https://github.com/php/php-src/issues/9227 Author: cmb69 ### Description The following code: ```php <?php var_dump(realpath(__DIR__ . "/ntfs.txt.")); var_dump(file_put_contents(__DIR__ . "/ntfs.txt", "bar")); var_dump(realpath(__DIR__ . "/ntfs.txt.")); ``` Resulted in this output: ``` bool(false) int(3) string(35) "C:\php-sdk\phpdev\vs16\x64\ntfs.txt" ``` But I expected this output instead: ``` bool(false) int(3) bool(false) ``` This happens regardless of NTS or ZTS builds. The very same happens for trailing spaces. The basic problem is that [Windows treats filenames with trailing spaces or dots in a special way](https://docs.microsoft.com/en-us/troubleshoot/windows-client/shell-experience/file-folder-name-whitespace-characters), namely that these are basically ignored by most APIs. That article also mentions that leading spaces would be ignored, but I cannot reproduce this (Windows 21H1); maybe that has been changed in the meantime. Anyhow, the current behavior is very confusing, and doesn't match other systems. Furthermore, there is actually code which is supposed to catch these cases (trailing spaces and dots), and to report ERROR_ACCESS_DENIED: https://github.com/php/php-src/blob/4679805cd69f99d9f545f3c8f599112edc15c58d/win32/ioutil.h#L156-L169 However, this code is not exercised in many cases, since "normalization" occurs before the code is reached. ### PHP Version all supported versions ### Operating System Windows