patch 9.1.1862: wrong ifdefs for clipboard provider

Problem:  Wrong ifdefs for clipboard provider (after v9.1.1857)
Solution: Update ifdefs (Foxe Chen)

`clip_mch_own_selection()` should only be compiled if there is:

- No Wayland or X11 or clipboard provider support
- If not on UNIX (except MacOS) and clipboard provider feature is
  enabled.

closes: #18574

Signed-off-by: Foxe Chen <chen.foxe@gmail.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>

src/version.c

@@ -734,6 +734,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    1862,
 /**/
     1861,
 /**/