Issue found from internal usage of extension.

It seems there's a way to partially install Windows SDK where not all include paths in the root path of the SDK are installed. The extension currently gets the version of Windows SDK by via searching for "um" include path within an SDK's root path to get the SDK's version and to the other include paths under that SDK folder. If the "um" include path is not installed but other include paths are installed, then the extension will fail to get the include path that are installed.

Investigate scenario of partial installation of Windows SDK and if there's a way to better get the include paths of newer versions of the SDK.