patch 8.2.1036: popupwin test fails sometimes

Problem:    Popupwin test fails sometimes.
Solution:   Use WaitForAssert() instead of a sleep.
diff --git a/src/version.c b/src/version.c
index 3c6b744..42c03d0 100644
--- a/src/version.c
+++ b/src/version.c
@@ -755,6 +755,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1036,
+/**/
     1035,
 /**/
     1034,