### 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
'''
        Our helper function, which will also recursively check dict and
        list entries due to the fact that they may be repr'd and contain
        a key or value which contains jinja2 syntax and would otherwise
        lose the AnsibleUnsafe value.
        '''
        if isinstance(val, dict):
            for key in val.keys():
                if self._is_unsafe(val[key]):
                    return True
        elif isinstance(val, list):
            for item in val:
                if self._is_unsafe(item):
                    return True
        elif getattr(val, '__UNSAFE__', False) is True:
            return True
        return False
    def _update_unsafe(self, val):
        if val is not None and not self.unsafe and self._is_unsafe(val):
            self.unsafe = True
    def resolve(self, key):
        '''
        The intercepted resolve(), which uses the helper above to set the
        internal flag whenever an unsafe variable value is returned.
        '''
        val = super(AnsibleContext, self).resolve(key)
        self._update_unsafe(val)
        return val
    def resolve_or_missing(self, key):