patch 8.2.4441: Vim9: function argument of filter() not checked like map()

Problem:    Vim9: function argument of filter() not checked like map().
Solution:   Also check the function argument of filter().
diff --git a/src/version.c b/src/version.c
index 809b03f..0001834 100644
--- a/src/version.c
+++ b/src/version.c
@@ -751,6 +751,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    4441,
+/**/
     4440,
 /**/
     4439,