patch 9.1.0257: Vim9: :call may not find imported class members

Problem:  Vim9: :call may not find imported class members
          (mityu)
Solution: Set the typval of an imported lval variable correctly
          (Yegappan Lakshmanan)

fixes: #14334
closes: #14386

Signed-off-by: Yegappan Lakshmanan <yegappan@yahoo.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>
diff --git a/src/version.c b/src/version.c
index 3d0474a..0e54926 100644
--- a/src/version.c
+++ b/src/version.c
@@ -705,6 +705,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    257,
+/**/
     256,
 /**/
     255,