feat(crosswalk): increase minimum occlusion size that causes slowdown to 1m (autowarefoundation#909)

Signed-off-by: Maxime CLEMENT <maxime.clement@tier4.jp>

Author: maxime-clem

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

@@ -75,7 +75,7 @@
         occluded_object_velocity: 1.0 # [m/s] assumed velocity of objects that may come out of the occluded space
         slow_down_velocity: 1.0  # [m/s]
         time_buffer: 0.5  # [s] consecutive time with/without an occlusion to add/remove the slowdown
-        min_size: 0.5  # [m] minimum size of an occlusion (square side size)
+        min_size: 1.0  # [m] minimum size of an occlusion (square side size)
         free_space_max: 43  # [-] maximum value of a free space cell in the occupancy grid
         occupied_min: 58    # [-] minimum value of an occupied cell in the occupancy grid
         ignore_with_red_traffic_light: true  # [-] if true, occlusions at crosswalks with traffic lights are ignored