feat(avoidance): keep stopping until all shift lines are registered

Signed-off-by: satoshi-ota <[email protected]>

autoware_launch/config/planning/scenario_planning/lane_driving/behavior_planning/behavior_path_planner/avoidance/avoidance.param.yaml

@@ -215,6 +215,10 @@
         stop_buffer: 1.0                                # [m]
 
       policy:
+        # policy for rtc request. select "shift_line" or "maneuver".
+        # "shift_line": request approval for each shift line.
+        # "maneuver": request approval for avoidance maneuver (avoid + return).
+        approval: "shift_line"
         # policy for vehicle slow down behavior. select "best_effort" or "reliable".
         # "best_effort": slow down deceleration & jerk are limited by constraints.
         #                but there is a possibility that the vehicle can't stop in front of the vehicle.