### Summary

I have an inventory with two hosts, say H1 an H2.
On H2, I execute a task with `delegate_to: H1`. It seems, however, that the task is eventually executed on H2.


### Issue Type

Bug Report

### Component Name

core

### Ansible Version

```console
$ ansible --version
ansible [core 2.11.5] 
  config file = /etc/ansible/ansible.cfg
  configured module search path = ['/home/mrks/.ansible/plugins/modules', '/usr/share/ansible/plugins/modules']
  ansible python module location = /usr/lib/python3.9/site-packages/ansible
  ansible collection location = /home/mrks/.ansible/collections:/usr/share/ansible/collections
  executable location = /usr/bin/ansible
  python version = 3.9.7 (default, Aug 31 2021, 13:28:12) [GCC 11.1.0]
  jinja version = 3.0.2
  libyaml = True
```


### Configuration

```console
$ ansible-config dump --only-changed
<none>
```


### OS / Environment

Arch Linux

### Steps to Reproduce

Playbook:
```yaml
- hosts: H2
  tasks:
  - shell: hostname
    register: foo
    delegate_to: H1
  - debug:
    var: foo
```


### Expected Results

Expected foo.stdout = 'H1'.

By the way, I am pretty sure that this worked for a long time.

### Actual Results

```console
TASK [shell] *******************************************************************
changed: [H2 -> H1]

TASK [debug] *******************************************************************
ok: [H2] => {
    "foo": {
...
        "stdout": "H2",
        "stdout_lines": [
            "H2"
        ]
    }
}
```


### Code of Conduct

- [X] I agree to follow the Ansible Code of Conduct
'ANSIBLE_BECOME_PLUGINS': become_loader.print_paths(),
        'ANSIBLE_CLICONF_PLUGINS': cliconf_loader.print_paths(),
        'ANSIBLE_COLLECTIONS_PATH': to_native(os.pathsep.join(AnsibleCollectionConfig.collection_paths)),
        'ANSIBLE_CONNECTION_PLUGINS': connection_loader.print_paths(),
        'ANSIBLE_HTTPAPI_PLUGINS': httpapi_loader.print_paths(),
        'ANSIBLE_NETCONF_PLUGINS': netconf_loader.print_paths(),
        'ANSIBLE_TERMINAL_PLUGINS': terminal_loader.print_paths(),
    })
    python = sys.executable
    master, slave = pty.openpty()
    p = subprocess.Popen(
        [python, ansible_connection, to_text(os.getppid()), to_text(task_uuid)],
        stdin=slave, stdout=subprocess.PIPE, stderr=subprocess.PIPE, env=env
    )
    os.close(slave)
    
    
    
    old = termios.tcgetattr(master)
    new = termios.tcgetattr(master)
    new[3] = new[3] & ~termios.ICANON
    try:
        termios.tcsetattr(master, termios.TCSANOW, new)
        write_to_file_descriptor(master, variables)
        write_to_file_descriptor(master, play_context.serialize())
        (stdout, stderr) = p.communicate()