enable intersection occlusion

Signed-off-by: t4-adc <grp-rd-1-adc-admin@tier4.jp>

Author: t4-adc

autoware_launch/config/planning/scenario_planning/lane_driving/behavior_planning/behavior_velocity_planner/intersection.param.yaml

@@ -89,7 +89,7 @@
           object_time_margin_to_collision_point: 4.0
 
       occlusion:
-        enable: false
+        enable: true
         occlusion_attention_area_length: 70.0
         free_space_max: 43
         occupied_min: 58