### 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
if cache and only_one:
                self._cached_result[sha1_hash] = result
            return result
        elif is_sequence(variable):
            return [self.template(
                v,
                preserve_trailing_newlines=preserve_trailing_newlines,
                fail_on_undefined=fail_on_undefined,
                overrides=overrides,
                disable_lookups=disable_lookups,
            ) for v in variable]
        elif isinstance(variable, Mapping):
            d = {}
            
            
            for k in variable.keys():
                if k not in static_vars:
                    d[k] = self.template(
                        variable[k],
                        preserve_trailing_newlines=preserve_trailing_newlines,
                        fail_on_undefined=fail_on_undefined,
                        overrides=overrides,
                        disable_lookups=disable_lookups,
                    )
                else:
                    d[k] = variable[k]
            return d
        else:
            return variable
    def is_template(self, data):