…jderusse, HypeMC)

This PR was merged into the 5.4 branch.

Discussion
----------

[Config] Allow scalar configuration in PHP Configuration

| Q             | A
| ------------- | ---
| Branch?       | 5.4
| Bug fix?      | yes
| New feature?  | no
| Deprecations? | no
| Tickets       | Fix symfony/monolog-bundle#417 (comment)
| License       | MIT
| Doc PR        | -

Fixes passing scalar values to array nodes that have a `beforeNormalization` hook, eg:

```php
return static function (MonologConfig $config): void {
    $config->handler('console')
        // ...
        ->processPsr3Messages()
            ->enabled(true)
    ;
};
```

can be shortened thanks to a [`beforeNormalization` hook](https://github.com/symfony/monolog-bundle/blob/a41bbcdc1105603b6d73a7d9a43a3788f8e0fb7d/DependencyInjection/Configuration.php#L453):

```php
return static function (MonologConfig $config): void {
    $config->handler('console')
        // ...
        ->processPsr3Messages(true)
    ;
};
```

I've used some of the code from #44166 by `@jderusse`. Since his PR is a feature it can't go on 5.4, but it still helped a lot.

Commits
-------

2d81a3a [Config] Allow scalar configuration in PHP Configuration
1c176e1 [Config] Allow scalar configuration in PHP Configuration

- undo changes from symfony#44166
-

- undo changes from symfony#44166

- undo changes from symfony#44166