patch 8.2.3635: GTK: composing underline does not show

Problem:    GTK: composing underline does not show.
Solution:   Include composing character in pango call. A few more
            optimizations for ligatures.  (Dusan Popovic, closes #9171,
            closes #9147)
diff --git a/src/version.c b/src/version.c
index fbbc961..1efddd8 100644
--- a/src/version.c
+++ b/src/version.c
@@ -758,6 +758,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    3635,
+/**/
     3634,
 /**/
     3633,