Add "disable_extend" bool to constants

Change-Id: Ibc839f913aa573655ad27aaeef9635ef2071d883
Signed-off-by: James Kuszmaul <jabukuszmaul+collab@gmail.com>
diff --git a/y2024/constants/constants.fbs b/y2024/constants/constants.fbs
index c679128..1554f4c 100644
--- a/y2024/constants/constants.fbs
+++ b/y2024/constants/constants.fbs
@@ -197,6 +197,7 @@
   altitude_avoid_extend_collision_position: double (id: 28);
   autonomous_mode:AutonomousMode (id: 26);
   ignore_targets:IgnoreTargets (id: 27);
+  disable_extend:bool (id: 29);
 }
 
 table Constants {