patch 8.2.3286: win_enter_ext() has too many boolean arguments

Problem:    win_enter_ext() has too many boolean arguments.
Solution:   use one flags argument with defined values.
diff --git a/src/version.c b/src/version.c
index dfe952c..f42be15 100644
--- a/src/version.c
+++ b/src/version.c
@@ -756,6 +756,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    3286,
+/**/
     3285,
 /**/
     3284,