patch 8.2.3462: ModeChanged only uses one character for new_mode and old_mode

Problem:    The ModeChanged event only uses one character for the new_mode and
            old_mode values.
Solution:   Pass one as first argument to mode(). (issue #8856)
diff --git a/src/version.c b/src/version.c
index 57865cd..27e8365 100644
--- a/src/version.c
+++ b/src/version.c
@@ -758,6 +758,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    3462,
+/**/
     3461,
 /**/
     3460,