patch 8.2.3802: terminal in two windows test fails on some systems

Problem:    Terminal in two windows test fails on some systems.
Solution:   Wait a bit between commands.
diff --git a/src/version.c b/src/version.c
index 8f0b954..4181019 100644
--- a/src/version.c
+++ b/src/version.c
@@ -750,6 +750,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    3802,
+/**/
     3801,
 /**/
     3800,