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.

EG(windows_version_info) に値を設定する Windows 固有のコードと、php_get_uname() で使用されている GetVersion() の呼び出しを見つけ、それらを main/main.stub.php で宣言されている定数と比較する。関連する OSVERSIONINFOEX フィールドが非推奨 API なしで互換性を維持できるか、影響を受ける userland 定数を非推奨にする必要があるかを判断する。互換性に関する判断が文書化され、2 つの非推奨の呼び出しに対応できれば完了とする。