patch 8.2.3281: Vim9: TODO items in tests can be taken care of

Problem:    Vim9: TODO items in tests can be taken care of.
Solution:   Update test for now working functionality. (closes #8694)
diff --git a/src/version.c b/src/version.c
index 32403f4..251f26f 100644
--- a/src/version.c
+++ b/src/version.c
@@ -756,6 +756,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    3281,
+/**/
     3280,
 /**/
     3279,