patch 8.2.3897: Vim9: second argument of map() and filter() not checked

Problem:    Vim9: the second argument of map() and filter() is not checked at
            compile time.
Solution:   Add more specific type check for the second argument.

src/list.c

@@ -2280,7 +2280,7 @@ filter_map_one(
 
 	// filter(): when expr is zero remove the item
 	if (in_vim9script())
-	    *remp = !tv2bool(newtv);
+	    *remp = !tv_get_bool_chk(newtv, &error);
 	else
 	    *remp = (tv_get_number_chk(newtv, &error) == 0);
 	clear_tv(newtv);