feat(tier4_control_launch): disable the trajectory extension (autowarefoundation#866)

disable the trajectory extending for terminal yaw control

Signed-off-by: Zhe Shen <lucidshenzhe@gmail.com>

Author: HansOersted

autoware_launch/config/control/trajectory_follower/lateral/mpc.param.yaml

@@ -13,7 +13,7 @@
     curvature_smoothing_num_ref_steer: 15   # point-to-point index distance used in curvature calculation (for steer command reference): curvature is calculated from three points p(i-num), p(i), p(i+num)
 
     # -- trajectory extending --
-    extend_trajectory_for_end_yaw_control: true  # flag of trajectory extending for terminal yaw control
+    extend_trajectory_for_end_yaw_control: false  # flag of trajectory extending for terminal yaw control
 
     # -- mpc optimization --
     qp_solver_type: "osqp"                       # optimization solver option (unconstraint_fast or osqp)