aligh with rcl that a rosout publisher of a node might not exist

[iuhilnehc-ynos]

align with ros2/rcl#1115

[clalancette]

I think we need to add a test for this situation, but it otherwise looks good.

[clalancette]

I think we want to add a test to ensure that the situation from #1195 doesn't occur again. The following code (which needs to be adapted into a test) reproduced for me:

import rclpy
from rclpy.action import ActionServer

from example_interfaces.action import Fibonacci

class MyClass:
    def __init__(self, node):
        self.action_server = ActionServer(
            node,
            Fibonacci,
            "/fibonacci_action_1",
            self.execute_callback,
        )

    def execute_callback(self):
        print("Execute callback")

rclpy.init()
node = rclpy.create_node("mynode", enable_rosout=False)
x = MyClass(node)
node.destroy_node()
rclpy.try_shutdown()

[iuhilnehc-ynos]

Thanks.
I used the similar logic to test the case. Updated in fc84c5e.

[clalancette]

CI for this is in ros2/rcl#1115 (comment)