patch 8.1.1263: mouse clicks in WinBar not tested

Problem:    Mouse clicks in WinBar not tested.
Solution:   Add a test for clicking on the WinBar entries.
diff --git a/src/version.c b/src/version.c
index 07f3962..f5faef3 100644
--- a/src/version.c
+++ b/src/version.c
@@ -768,6 +768,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1263,
+/**/
     1262,
 /**/
     1261,