patch 8.2.0149: maintaining a Vim9 branch separately is more work

Problem:    Maintaining a Vim9 branch separately is more work.
Solution:   Merge the Vim9 script changes.
diff --git a/src/filepath.c b/src/filepath.c
index ef5edae..04026a0 100644
--- a/src/filepath.c
+++ b/src/filepath.c
@@ -1892,6 +1892,7 @@
 	list = argvars[0].vval.v_list;
 	if (list == NULL)
 	    return;
+	range_list_materialize(list);
 	for (li = list->lv_first; li != NULL; li = li->li_next)
 	    if (tv_get_string_chk(&li->li_tv) == NULL)
 		return;