patch 8.2.3181: Vim9: builtin function test fails without channel feature

Problem:    Vim9: builtin function test fails without channel feature.
Solution:   Add feature checks. (Dominique Pellé, closes #8586)  Make feature
            checks more consistent.
diff --git a/src/version.c b/src/version.c
index b59eca2..371fdcd 100644
--- a/src/version.c
+++ b/src/version.c
@@ -756,6 +756,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    3181,
+/**/
     3180,
 /**/
     3179,