simple_sensor_simulator outputs shows any objects in occulusion

[HansRobo]

Describe the bug

In the two images below, a vehicle exists in a blind spot caused by the MiscObject in the foreground.
But, We can see the vehicle in both of perception output and gridmap output from simple_sensor_simulator.

To Reproduce

• spawn vehicle in occulusion spot
• check perception and gridmap outputs from simple_sensor_simualtor

Expected behavior

Entities in blind spots are not output to topics for Autoware.

Screenshots
I put them in "Describe the bug" section.

Desktop (please complete the following information):

• Ubuntu Version: 22.04
• ROS 2 version: Humble
• DDS: cyclone DDS