fix(static_obstacle_avoidance): check stopped time in freespace (#1074)

Signed-off-by: satoshi-ota <satoshi.ota928@gmail.com>

Author: satoshi-ota

autoware_launch/config/planning/scenario_planning/lane_driving/behavior_planning/behavior_path_planner/autoware_behavior_path_static_obstacle_avoidance_module/static_obstacle_avoidance.param.yaml

@@ -160,6 +160,10 @@
         intersection:
           yaw_deviation: 0.349                          # [rad] (default 20.0deg)
 
+        freespace:
+          condition:
+            th_stopped_time: 5.0                        # [-]
+
       # For safety check
       safety_check:
         # safety check target type