### Summary

The documentation on https://docs.ansible.com/ansible/latest/collections/ansible/builtin/unarchive_module.html states that the module fully supports check-mode.
But the fact is that check-mode is not supported when it concerns a gzipped tar file cfr. https://github.com/ansible/ansible-modules-core/blob/00911a75ad6635834b6d28eef41f197b2f73c381/files/unarchive.py#L591
I was mislead by the '_fully_ supported' and noticed that the step was skipped in check-mode.
Wouldn't it make sense to adapt the documentation accordingly ?


### Issue Type

Documentation Report

### Component Name

https://github.com/ansible/ansible-modules-core/blob/00911a75ad6635834b6d28eef41f197b2f73c381/files/unarchive.py

### Ansible Version

```console
$ ansible --version
ansible [core 2.12.6]
  config file = ansible.cfg
  configured module search path = ['/usr/share/ansible/plugins/modules']
  ansible python module location = /usr/local/lib/python3.9/dist-packages/ansible
  ansible collection location = /home/<user>/.ansible
  executable location = /usr/local/bin/ansible
  python version = 3.9.2 (default, Feb 28 2021, 17:03:44) [GCC 10.2.1 20210110]
  jinja version = 2.11.3
  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
```


### OS / Environment

Debian 11

### Additional Information

When the documentation is adapted, it is clear for everyone that unarchiving gzipped tar files is not check_mode compatible.

### Code of Conduct

- [X] I agree to follow the Ansible Code of Conduct
description:
      - If true, the file is copied from local controller to the managed (remote) node, otherwise, the plugin will look for src archive on the managed machine.
      - This option has been deprecated in favor of C(remote_src).
      - This option is mutually exclusive with C(remote_src).
    type: bool
    default: yes
  creates:
    description:
      - If the specified absolute path (file or directory) already exists, this step will B(not) be run.
      - The specified absolute path (file or directory) must be below the base path given with C(dest:).
    type: path
    version_added: "1.6"
  io_buffer_size:
    description:
      - Size of the volatile memory buffer that is used for extracting files from the archive in bytes.
    type: int
    default: 65536
    version_added: "2.12"
  list_files:
    description:
      - If set to True, return the list of files that are contained in the tarball.
    type: bool
    default: no
    version_added: "2.0"
  exclude:
    description:
      - List the directory and file entries that you would like to exclude from the unarchive action.
      - Mutually exclusive with C(include).
    type: list
    default: []