runtime(mswin): still another clipboard_working test

Commit 760f664213 missed to revert back
another test for `if has('clipboard_working')`

So change the remaining check around the inoremap <c-v> mappings.

fixes #14195

Signed-off-by: Christian Brabandt <cb@256bit.org>

runtime/mswin.vim

@@ -67,7 +67,7 @@ endif
 " Uses the paste.vim autoload script.
 " Use CTRL-G u to have CTRL-Z only undo the paste.
 
-if has("clipboard_working")
+if has("clipboard")
     exe 'inoremap <script> <C-V> <C-G>u' . paste#paste_cmd['i']
     exe 'vnoremap <script> <C-V> ' . paste#paste_cmd['v']
 endif