patch 9.0.0459: Vim9: block in for loop doesn't behave like a code block

Problem:    Vim9: block in for loop doesn't behave like a code block.
Solution:   Use a new block ID for each loop at the script level.
diff --git a/src/version.c b/src/version.c
index 25c28f8..dede808 100644
--- a/src/version.c
+++ b/src/version.c
@@ -704,6 +704,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    459,
+/**/
     458,
 /**/
     457,