### Summary

User module is not idempotent when update_password: always parameter set in the playbook for macOS 

Result is always showing changed if use already present and no changes in the password . 



### Issue Type

Bug Report

### Component Name

user

### Ansible Version

```console
ansible 2.9.21
  config file = /etc/ansible/ansible.cfg
  configured module search path = ['/home/navarihtak/.ansible/plugins/modules', '/usr/share/ansible/plugins/modules']
  ansible python module location = /home/navarihtak/.local/lib/python3.8/site-packages/ansible
  executable location = /home/navarihtak/.local/bin/ansible
  python version = 3.8.10 (default, Nov 14 2022, 12:59:47) [GCC 9.4.0]
```


### 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 dump --only-changed
DEFAULT_VAULT_PASSWORD_FILE(env: ANSIBLE_VAULT_PASSWORD_FILE) = /home/navarihtak/.ansible/.vault_pass
HOST_KEY_CHECKING(env: ANSIBLE_HOST_KEY_CHECKING) = False
$
```


### OS / Environment

All MacOS version 

### Steps to Reproduce

```yaml
      - name: Add user for Darwin
        user:
          name: "{{ username }}"
          comment: "{{ username }}"
          shell: "/bin/bash"
          group: "{{ user_group }}"
          password: "{{ user_pass }}"
          update_password: always
          state: present
        when: ansible_os_family == 'Darwin'
        become: yes
```

### Expected Results

It should be idempotent. Result status should shows ok if user is already exist and password is not changed. 

### Actual Results

```console
Always shows result status is changed if user is already exist and password is not changed.
```


### Code of Conduct

- [X] I agree to follow the Ansible Code of Conduct
if self.local:
            if not os.path.exists(self.PASSWORDFILE):
                self.module.fail_json(msg="'local: true' specified but unable to find local account file {0} to parse.".format(self.PASSWORDFILE))
            exists = False
            name_test = '{0}:'.format(self.name)
            with open(self.PASSWORDFILE, 'rb') as f:
                reversed_lines = f.readlines()[::-1]
                for line in reversed_lines:
                    if line.startswith(to_bytes(name_test)):
                        exists = True
                        break
            if not exists:
                self.module.warn(
                    "'local: true' specified and user '{name}' was not found in {file}. "
                    "The local user account may already exist if the local account database exists "
                    "somewhere other than {file}.".format(file=self.PASSWORDFILE, name=self.name))
            return exists
        else:
            try:
                if pwd.getpwnam(self.name):
                    return True
            except KeyError:
                return False
    def get_pwd_info(self):