### Summary

When using the `ansible.builtin.assemble` module with `--diff`, the task fails with the following error:
> Unexpected failure during module execution: ActionBase._get_diff_data() missing 1 required positional argument: 'content'

`ansible-playbook -vvvv` says the relevant function call happens in [ansible/plugins/action/assemble.py, line 143](https://github.com/ansible/ansible/blob/6ebefaceb6cd0d4961776a94d63a71fc1fc28bc0/lib/ansible/plugins/action/assemble.py#L143).  
Note: on my local machine that's currently line 144; 143 is on the current devel branch.

The last known working version is 8.6.1


### Issue Type

Bug Report

### Component Name

ansible.builtin.assemble

### Ansible Version

```console
$ ansible --version
ansible [core 2.16.0]
  config file = None
  configured module search path = ['/Users/albalitz/.ansible/plugins/modules', '/usr/share/ansible/plugins/modules']
  ansible python module location = /opt/homebrew/Cellar/ansible/9.0.1/libexec/lib/python3.12/site-packages/ansible
  ansible collection location = /Users/albalitz/.ansible/collections:/usr/share/ansible/collections
  executable location = /opt/homebrew/bin/ansible
  python version = 3.12.0 (main, Oct  3 2023, 16:20:33) [Clang 14.0.3 (clang-1403.0.22.14.1)] (/opt/homebrew/Cellar/ansible/9.0.1/libexec/bin/python)
  jinja version = 3.1.2
  libyaml = True
```


### Configuration

```console
$ ansible-config dump --only-changed -t all
CONFIG_FILE() = None
EDITOR(env: EDITOR) = /usr/bin/vim
PAGER(env: PAGER) = less
```


### OS / Environment

This happens on my local machine running MacOS Sonoma 14.1.2 (Ansible installed via homebrew) as well as our CI system running in a `python:alpine`-based Docker environment with the same Ansible version as above (Ansible is installed via pip there and updated semi-automatically using renovatebot).

### Steps to Reproduce

This step fails with the error described above:
```yaml
- name: create concatenated file
  local_action:
    module: assemble
    remote_src: false
    src: files/some_files/
    dest: /tmp/concatenated_file
  no_log: true
  changed_when: false
  check_mode: no
  become: no
  run_once: true
```

The step works when `--diff` is removed from the `ansible-playbook` command.

### Expected Results

I expected the `assemble` step to run successfully and produce a concatenated file with `--diff` enabled but without printing the diff (due to `no_log: true` - I set that to `false` for debugging purposes to see the error message).

### Actual Results

```console
<localhost> ESTABLISH LOCAL CONNECTION FOR USER: albalitz
<localhost> EXEC /bin/sh -c 'echo ~albalitz && sleep 0'
<localhost> EXEC /bin/sh -c '( umask 77 && mkdir -p "` echo /Users/albalitz/.ansible/tmp `"&& mkdir "` echo /Users/albalitz/.ansible/tmp/ansible-tmp-1701782995.5552058-23181-40564253413079 `" && echo ansible-tmp-1701782995.5552058-23181-40564253413079="` echo /Users/albalitz/.ansible/tmp/ansible-tmp-1701782995.5552058-23181-40564253413079 `" ) && sleep 0'
Using module file /opt/homebrew/Cellar/ansible/9.0.1/libexec/lib/python3.12/site-packages/ansible/modules/stat.py
<localhost> PUT /Users/albalitz/.ansible/tmp/ansible-local-23119muc1g04o/tmp8owc8yoz TO /Users/albalitz/.ansible/tmp/ansible-tmp-1701782995.5552058-23181-40564253413079/AnsiballZ_stat.py
<localhost> EXEC /bin/sh -c 'chmod u+x /Users/albalitz/.ansible/tmp/ansible-tmp-1701782995.5552058-23181-40564253413079/ /Users/albalitz/.ansible/tmp/ansible-tmp-1701782995.5552058-23181-40564253413079/AnsiballZ_stat.py && sleep 0'
<localhost> EXEC /bin/sh -c '/opt/homebrew/Cellar/ansible/9.0.1/libexec/bin/python /Users/albalitz/.ansible/tmp/ansible-tmp-1701782995.5552058-23181-40564253413079/AnsiballZ_stat.py && sleep 0'
<localhost> EXEC /bin/sh -c 'rm -f -r /Users/albalitz/.ansible/tmp/ansible-tmp-1701782995.5552058-23181-40564253413079/ > /dev/null 2>&1 && sleep 0'
The full traceback is:
Traceback (most recent call last):
  File "/opt/homebrew/Cellar/ansible/9.0.1/libexec/lib/python3.12/site-packages/ansible/executor/task_executor.py", line 165, in run
    res = self._execute()
          ^^^^^^^^^^^^^^^
  File "/opt/homebrew/Cellar/ansible/9.0.1/libexec/lib/python3.12/site-packages/ansible/executor/task_executor.py", line 641, in _execute
    result = self._handler.run(task_vars=vars_copy)
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/opt/homebrew/Cellar/ansible/9.0.1/libexec/lib/python3.12/site-packages/ansible/plugins/action/assemble.py", line 144, in run
    diff = self._get_diff_data(dest, path, task_vars)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
TypeError: ActionBase._get_diff_data() missing 1 required positional argument: 'content'
fatal: [shorewall-0 -> localhost]: FAILED! => {}

MSG:

Unexpected failure during module execution: ActionBase._get_diff_data() missing 1 required positional argument: 'content'
```


### Code of Conduct

- [X] I agree to follow the Ansible Code of Conduct
from __future__ import annotations
import base64
import json
import os
import random
import re
import shlex
import stat
import tempfile
from abc import ABC, abstractmethod
from collections.abc import Sequence
from ansible import constants as C
from ansible.errors import AnsibleError, AnsibleConnectionFailure, AnsibleActionSkip, AnsibleActionFail, AnsibleAuthenticationFailure
from ansible.executor.module_common import modify_module
from ansible.executor.interpreter_discovery import discover_interpreter, InterpreterDiscoveryRequiredError
from ansible.module_utils.common.arg_spec import ArgumentSpecValidator
from ansible.module_utils.errors import UnsupportedError
from ansible.module_utils.json_utils import _filter_non_json_lines
from ansible.module_utils.six import binary_type, string_types, text_type
from ansible.module_utils.common.text.converters import to_bytes, to_native, to_text
from ansible.parsing.utils.jsonify import jsonify
from ansible.release import __version__
from ansible.utils.collection_loader import resource_from_fqcr
from ansible.utils.display import Display
from ansible.utils.unsafe_proxy import wrap_var, AnsibleUnsafeText
from ansible.vars.clean import remove_internal_keys
from ansible.utils.plugin_docs import get_versioned_doclink
display = Display()
def _validate_utf8_json(d):