### 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 custom environment, which simply allows us to override the class-level
    values for the Template and Context classes used by jinja2 internally.
    '''
    context_class = AnsibleContext
    template_class = AnsibleJ2Template
    concat = staticmethod(ansible_eval_concat)
    def __init__(self, *args, **kwargs):
        super().__init__(*args, **kwargs)
        self.filters = JinjaPluginIntercept(self.filters, filter_loader)
        self.tests = JinjaPluginIntercept(self.tests, test_loader)
        self.trim_blocks = True
        self.undefined = AnsibleUndefined
        self.finalize = _ansible_finalize
class AnsibleNativeEnvironment(AnsibleEnvironment):
    concat = staticmethod(ansible_native_concat)
    def __init__(self, *args, **kwargs):
        super().__init__(*args, **kwargs)
        self.finalize = _unroll_iterator(_fail_on_undefined)
class Templar: