Don't use deprecated `GetVersionEx()`

Description

We're using GetVersionEx() to set EG(windows_version_info), and also GetVersion() in php_get_uname() (the latter might reuse the former; I'll have a closer look). Both functions are deprecated, and the documentation states:

GetVersionExA may be altered or unavailable for releases after Windows 8.1. Instead, use the Version Helper functions.

Using the version helper functions in combination with GetProductInfo() is indeed an option, but changing EG(windows_version_info) to no longer hold an OSVERSIONINFOEX structure would be a BC break, which is exacerbated by the fact that we make the fields available as userland constants:

https://github.com/php/php-src/blob/10ccb6bf0d4593e7250ac699addf31deee82caa0/main/main.stub.php#L193-L232

Either we find a way to populate the (relevant) fields of OSVERSIONINFOEX without calling any deprecated functions, or we may consider to deprecate some of the userland constants. Maybe we should do both.

Localiza el código específico de Windows que rellena EG(windows_version_info) y la llamada a GetVersion() usada por php_get_uname(), y compáralos con las constantes declaradas en main/main.stub.php. Determina si los campos relevantes de OSVERSIONINFOEX pueden seguir siendo compatibles sin APIs obsoletas o si es necesario marcar como obsoletas las constantes de userland afectadas; se considera terminado cuando la decisión de compatibilidad está documentada y se han abordado ambas llamadas obsoletas.