### 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
from __future__ import (absolute_import, division, print_function)
__metaclass__ = type
DOCUMENTATION = '''
    name: ssh
    short_description: connect via SSH client binary
    description:
        - This connection plugin allows Ansible to communicate to the target machines through normal SSH command line.
        - Ansible does not expose a channel to allow communication between the user and the SSH process to accept
          a password manually to decrypt an SSH key when using this connection plugin (which is the default). The
          use of C(ssh-agent) is highly recommended.
    author: ansible (@core)
    extends_documentation_fragment:
        - connection_pipelining
    version_added: historical
    notes:
        - Many options default to C(None) here but that only means we do not override the SSH tool's defaults and/or configuration.
          For example, if you specify the port in this plugin it will override any C(Port) entry in your C(.ssh/config).
    options:
      host:
          description: Hostname/IP to connect to.
          vars:
               - name: inventory_hostname
               - name: ansible_host
               - name: ansible_ssh_host