feat(behavior_velocity_traffic_light_module): change threshold veloci…

…ty of pass judge for preventing sudden stop (autowarefoundation#1616)

Signed-off-by: tomoya.kimura <tomoya.kimura@tier4.jp>

planning/behavior_velocity_traffic_light_module/src/scene.cpp

@@ -353,7 +353,7 @@ bool TrafficLightModule::isPassthrough(const double & signed_arc_length) const
     delay_response_time);
 
   const bool distance_stoppable = pass_judge_line_distance < signed_arc_length;
-  const bool slow_velocity = planner_data_->current_velocity->twist.linear.x < 2.0;
+  const bool slow_velocity = planner_data_->current_velocity->twist.linear.x < 1.0;
   const bool stoppable = distance_stoppable || slow_velocity;
   const bool reachable = signed_arc_length < reachable_distance;