Win32: Update OSK bypass with Unicode/wchar/wstring support.

Seems like now that we use Unicode, it's not necessary to convert UCS2 to UTF8 to get previously entered values, titles, etc.

This will let users who use bBypassOSKWithKeyboard to enter Japanese, Russian, Chinese, etc., text into their games(or it should..I mostly tested with Japanese games, and a few US games).