### 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
'''
        Return jinja2 extensions to load.
        If some extensions are set via jinja_extensions in ansible.cfg, we try
        to load them with the jinja environment.
        '''
        jinja_exts = []
        if C.DEFAULT_JINJA2_EXTENSIONS:
            
            
            jinja_exts = C.DEFAULT_JINJA2_EXTENSIONS.replace(" ", "").split(',')
        return jinja_exts
    @property
    def available_variables(self):
        return self._available_variables
    @available_variables.setter
    def available_variables(self, variables):
        '''
        Sets the list of template variables this Templar instance will use
        to template things, so we don't have to pass them around between
        internal methods. We also clear the template cache here, as the variables
        are being changed.
        '''
        if not isinstance(variables, Mapping):
            raise AnsibleAssertionError("the type of 'variables' should be a Mapping but was a %s" % (type(variables)))
        self._available_variables = variables
        self._cached_result = {}
    @contextmanager
    def set_temporary_context(self, **kwargs):