### 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
"""Context manager used to set temporary templating context, without having to worry about resetting
        original values afterward
        Use a keyword that maps to the attr you are setting. Applies to ``self.environment`` by default, to
        set context on another object, it must be in ``mapping``.
        """
        mapping = {
            'available_variables': self,
            'searchpath': self.environment.loader,
        }
        original = {}
        for key, value in kwargs.items():
            obj = mapping.get(key, self.environment)
            try:
                original[key] = getattr(obj, key)
                if value is not None:
                    setattr(obj, key, value)
            except AttributeError:
                
                pass
        yield
        for key in original:
            obj = mapping.get(key, self.environment)
            setattr(obj, key, original[key])
    def template(self, variable, convert_bare=False, preserve_trailing_newlines=True, escape_backslashes=True, fail_on_undefined=None, overrides=None,