Do not lock around writing to stdout, do not flush

[sivel]

Do not lock around writing to stdout, do not flush

[sivel]

This stuff is unnecessary for this PR, and if desired I can remove the last commit. Looking at things like this just drove me a little crazy:

log_only = args[5] if len(args) >= 6 else kwargs.get('log_only', False)

[sivel]

Reproducer for deadlock:

runme.py

import os
import ansible_runner

r = ansible_runner.run(
    private_data_dir=os.path.abspath(os.getcwd()),
    playbook='playbook.yml',
    inventory='hosts',
    forks=50,
    settings=dict(
        suppress_ansible_output=True,
    ),
)

project/action_plugins/chatty.py

from __future__ import annotations

from ansible.plugins.action import ActionBase
from ansible.utils.display import Display

display = Display()


class ActionModule(ActionBase):
    def run(self, tmp=None, task_vars=None):
        host = task_vars['inventory_hostname']
        for i in range(100):
            for a in ('display', 'v', 'vv', 'vvv', 'vvvv', 'vvvvv', 'vvvvvv', 'verbose', 'warning', 'debug'):
                getattr(display, a)(f'<{host}> chatty {i=} {a=}')
        return {}

Create an inventory with 100 hosts, and a playbook just like:

- hosts: all
  gather_facts: false
  tasks:
    - chatty: