refactor(lane_change): rename prepare_segment_ignore_object_velocity_thresh (autowarefoundation#1125)

change parameter name to a more expressive one

Signed-off-by: Zulfaqar Azmi <zulfaqar.azmi@tier4.jp>

Author: zulfaqar-azmi-t4

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

@@ -95,7 +95,7 @@
         general_lanes: false
         intersection: true
         turns: true
-      prepare_segment_ignore_object_velocity_thresh: 0.1 # [m/s]
+      stopped_object_velocity_threshold: 1.0 # [m/s]
       check_objects_on_current_lanes: false
       check_objects_on_other_lanes: false
       use_all_predicted_path: false