runtime(mswin): revert back the check for clipboard_working support

Commit d9ebd46bd090c598adc82e6 changed the condition to
check if the clipboard is available from:
```
has('clipboard')
```
to
```
has('clipboard_working')
```
Assuming that is the more accurate test because even when clipboard
support is enabled at compile time it may not be actually working (e.g.
if no X11 environment is available, or when working on a remote server).

However it seems that condition does not evaluate to true, when the GUI
has not been started up yet (and there was no X11 Connection yet possible).

So let's just revert back the check to `has('clipboard')`, since that
has been proven to be working well enough.

related: #13809

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

0 files changed, 0 insertions, 0 deletions