ros2.Crystal when Using rclcpp::executors::MultiThreadedExecutor::spin, if I use ctrl+c it will not shutdown the script

edit

I used the following link to create the MultiThreadedExecutor code I have written bellow.

The issue I am having is that when using ctrl + c, I receive a

[INFO] [rclcpp]: signal_handler(signal_value=2)

message but, the thread still hangs. I do not quite understand how the ROS2 signal handler works. Is there a way I can catch the [INFO] [rclcpp]: signal_handler(signal_value=2) message to exit out of the spin and close the program?

using rclcpp::executors::MultiThreadedExecutor;
using builtin_interfaces::msg::Time;

std::shared_ptr<rclcpp::Node> master_node;

int value=0;


class test{

public:
    static void topic_callback(test_msgs::msg::Test::SharedPtr msg)
  {
    std::cout  <<" Subscriber Received [" << msg->data << "]" << std::endl;
    value = msg->data;
  }

};

int main()
{

  rclcpp::shutdown();
  test *t;
  t = new test();
  rclcpp::init(0, nullptr);

  MultiThreadedExecutor executor;
  master_node = rclcpp::Node::make_shared("MasterNode");
  executor.add_node(master_node); 


  rclcpp::Publisher<test_msgs::msg::Test2>::SharedPtr publisher_;
  rclcpp::Subscription<test_msgs::msg::Test>::SharedPtr subscription_;


  subscription_ = master_node->create_subscription<test_msgs::msg::Test>("Test",t->topic_callback);  
  publisher_ =  master_node->create_publisher<test_msgs::msg::Test2>("Test2");
  rclcpp::Clock ros_clock(RCL_ROS_TIME);
  Time ros_now = ros_clock.now();
  std::thread executor_thread(std::bind(&MultiThreadedExecutor::spin, &executor));
  executor_thread.detach();


while(rclcpp::is_initialized)
  {
    auto message = test_msgs::msg::Test();
    message.header.stamp.nanosec = ros_now.nanosec;
    publisher_->publish(message);
    usleep(3000000);
  } 
    rclcpp::shutdown();

}