On Chinese Windows, `cmd /C ver` emits GBK-encoded output which was
decoded as UTF-8 lossy, rendering the localized text as mojibake
(e.g. "版本" became "�汾"). The full line also duplicated the
"Windows" prefix already provided by os_name().
Parse only the ASCII numeric version token (e.g. 10.0.26200.8655)
from the ver output, which is encoding-independent, and drop the
localized text entirely. Result: "Windows 10.0.26200.8655".
Fixest8y2/dbx#3056