### Summary

Saw this happening with ansible 2.15.3
When using ANSIBLE_DEBUG=1 with a add_host task, the task fails with

ansible/utils/vars.py\", line 91, in combine_vars\n    result = a | b\nTypeError: unsupported operand type(s) for |: 'VarsWithSources' and 'dict'

Same bug with ANSIBLE_DEBUG enabled: https://github.com/ansible/ansible/issues/79763
Where fix is needed: https://github.com/ansible/ansible/blob/3ec0850df9429f4b1abc78d9ba505df12d7dd1db/lib/ansible/utils/vars.py#L91

### Issue Type

Bug Report

### Component Name

add_host

### Ansible Version

```console
$ ansible --version
ansible [core 2.15.3]
  config file = None
  configured module search path = ['/home/runner/.ansible/plugins/modules', '/usr/share/ansible/plugins/modules']
  ansible python module location = /usr/local/lib/python3.9/site-packages/ansible
  ansible collection location = /home/runner/.ansible/collections:/usr/share/ansible/collections
  executable location = /usr/local/bin/ansible
  python version = 3.9.17 (main, Jun 13 2023, 16:05:09) [GCC 8.3.0] (/usr/local/bin/python3)
  jinja version = 3.0.3
  libyaml = True
```


### Configuration

```console
# if using a version older than ansible-core 2.12 you should omit the '-t all'
$ ansible-config dump --only-changed -t all
ansible-config [core 2.15.3]
  config file = None
  configured module search path = ['/home/runner/.ansible/plugins/modules', '/usr/share/ansible/plugins/modules']
  ansible python module location = /usr/local/lib/python3.9/site-packages/ansible
  ansible collection location = /home/runner/.ansible/collections:/usr/share/ansible/collections
  executable location = /usr/local/bin/ansible-config
  python version = 3.9.17 (main, Jun 13 2023, 16:05:09) [GCC 8.3.0] (/usr/local/bin/python3)
  jinja version = 3.0.3
  libyaml = True
No config file found; using defaults
Loading collection ansible.builtin from
```


### OS / Environment

Debian GNU/Linux 10 (buster)
Linux 3.10.0-1127.el7.x86_64 x86_64

### Steps to Reproduce
```
- name: create inventory
  hosts: localhost
  gather_facts: no
  tasks:
    - add_host:
        name: "{{ item }}"
        groups: resource_types
      with_items:
        - node
        - pod
        - namespace
        - ResourceQuota
```
### Expected Results

successfull result of playbook

### Actual Results

```console
ansible/utils/vars.py\", line 91, in combine_vars\n    result = a | b\nTypeError: unsupported operand type(s) for |: 'VarsWithSources' and 'dict'
```


### Code of Conduct

- [X] I agree to follow the Ansible Code of Conduct
"""Get the delegated_vars for an individual task invocation, which may be be in the context
        of an individual loop iteration.
        Not used directly be VariableManager, but used primarily within TaskExecutor
        """
        delegated_vars = {}
        delegated_host_name = None
        if task.delegate_to:
            delegated_host_name = templar.template(task.delegate_to, fail_on_undefined=False)
            delegated_host = self._inventory.get_host(delegated_host_name)
            if delegated_host is None:
                for h in self._inventory.get_hosts(ignore_limits=True, ignore_restrictions=True):
                    
                    
                    if h.address == delegated_host_name:
                        delegated_host = h
                        break
                else:
                    delegated_host = Host(name=delegated_host_name)
            delegated_vars['ansible_delegated_vars'] = {
                delegated_host_name: self.get_vars(
                    play=task.get_play(),
                    host=delegated_host,
                    task=task,
                    include_delegate_to=False,
                    include_hostvars=True,
                )
            }
            delegated_vars['ansible_delegated_vars'][delegated_host_name]['inventory_hostname'] = variables.get('inventory_hostname')
        return delegated_vars, delegated_host_name
    def _get_delegated_vars(self, play, task, existing_variables):