patch 8.2.3801: if a terminal shows in two windows, only one is redrawn

Problem:    If a terminal shows in two windows, only one is redrawn.
Solution:   Reset the dirty row range only after redrawing all windows.
            (closes #9341)
diff --git a/src/version.c b/src/version.c
index c39adda..8f0b954 100644
--- a/src/version.c
+++ b/src/version.c
@@ -750,6 +750,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    3801,
+/**/
     3800,
 /**/
     3799,