patch 8.2.0467: Vim9: some errors are not tested

Problem:    Vim9: some errors are not tested
Solution:   Add more tests.  Fix that Vim9 script flag is not reset.
diff --git a/src/version.c b/src/version.c
index 1630b5e..863f5ee 100644
--- a/src/version.c
+++ b/src/version.c
@@ -739,6 +739,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    467,
+/**/
     466,
 /**/
     465,