### Summary

While templating a JSON file where the JSON was created as part of a template (without using `to_json`) and where a macro was used to template some repeated parts, we found out that the generated JSON file was invalid JSON after switching from ansible-core 2.12 to ansible-core 2.13.

The problem seems to be that if the output of a macro looks like something that could be a Pyhon `repr()` result, it is converted back to Python datastructures.

### Issue Type

Bug Report

### Component Name

templar

### Ansible Version

```console
2.13.0
devel branch
```


### Configuration

```console
default
```


### OS / Environment

Linux

### Steps to Reproduce

```.bash
ansible localhost -m debug -a "msg='{% macro foo() %}{ "'"'"foo"'"'": "'"'"bar"'"'" }{% endmacro %}Test: {{ foo() }}'"
```
Or as a task:
```.yaml
- hosts: localhost
  tasks:
  - debug:
      msg: >-
        {% macro foo() %}{ "foo": "bar" }{% endmacro %}Test: {{ foo() }}
```


### Expected Results

```
"Test: {\"foo\": \"bar\"}"
```

### Actual Results

```console
"Test: {'foo': 'bar'}"
```
(This has `'` instead of `"`, so this isn't valid JSON.)
```


### Code of Conduct

- [X] I agree to follow the Ansible Code of Conduct
default: '{{'
        version_added: '2.8'
        type: str
      variable_end_string:
        description: The string marking the end of a print statement.
        default: '}}'
        version_added: '2.8'
        type: str
      jinja2_native:
        description:
            - Controls whether to use Jinja2 native types.
            - It is off by default even if global jinja2_native is True.
            - Has no effect if global jinja2_native is False.
            - This offers more flexibility than the template module which does not use Jinja2 native types at all.
            - Mutually exclusive with the convert_data option.
        default: False
        version_added: '2.11'
        type: bool
      template_vars:
        description: A dictionary, the keys become additional variables available for templating.
        default: {}
        version_added: '2.3'
        type: dict
      comment_start_string:
        description: The string marking the beginning of a comment statement.
        version_added: '2.12'
        type: str
      comment_end_string:
        description: The string marking the end of a comment statement.
        version_added: '2.12'