patch 9.0.1290: CTRL-N and -P on cmdline don't trigger CmdlineChanged

Problem:    CTRL-N and -P on cmdline don't trigger CmdlineChanged.
Solution:   Jump to cmdline_changed instead of cmdline_not_changed.
            (closes #11956)

src/version.c

@@ -695,6 +695,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    1290,
 /**/
     1289,
 /**/