patch 9.1.0459: Vim9: import autoload does not work with symlink

Problem:  Vim9: import autoload does not work with symlink
          (Olivier Dormond)
Solution: set sn_autoload_prefix in check_script_symlink
          (nwounkn)

fixes: #14775
closes: #14885

Signed-off-by: nwounkn <nwounkn@gmail.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>
diff --git a/src/version.c b/src/version.c
index 068c079..8b1282b 100644
--- a/src/version.c
+++ b/src/version.c
@@ -705,6 +705,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    459,
+/**/
     458,
 /**/
     457,