RequestResponseArgs strategy does not pass $args as an array in nested group routes.

[qdmcoding]

Expected Behavior:

When using RequestResponseArgs as the default invocation strategy, the $args parameter should always be an array, regardless of whether the route is inside a group.

Current Behavior:

When using RequestResponseArgs, $args is passed as a string instead of an array when the route is nested inside a group.

Steps to Reproduce:

Install Slim 4.12.0.
Set RequestResponseArgs as the default invocation strategy.
Define a nested route inside a group.
Access the route and observe that $args is passed as a string.

Minimal Reproducible Example:

<?php

require __DIR__ . '/vendor/autoload.php';

use Slim\Factory\AppFactory;
use Slim\Interfaces\RouteCollectorProxyInterface as RouteCollectorProxy;
use Slim\Handlers\Strategies\RequestResponseArgs;

$app = AppFactory::create();

// Set RequestResponseArgs strategy
$collector = $app->getRouteCollector();
$collector->setDefaultInvocationStrategy(new RequestResponseArgs());

$app->group('/goods', function (RouteCollectorProxy $group) {
    $group->get('/{name}', function ($request, $response, array $args) {
        var_dump($args); // Expect array, but it's a string
        return $response;
    });
});

$app->run();

Error Message:

Fatal error: Uncaught TypeError: Closure::{closure}(): Argument #3 ($args) must be of type array, string given

Possible Cause:

It seems that when {name} is inside a nested group, Slim fails to properly process the route parameters and passes them as a string instead of an array.

Workarounds:

1. Using RequestResponse instead of RequestResponseArgs

$collector->setDefaultInvocationStrategy(new \Slim\Handlers\Strategies\RequestResponse());

2. Using $request->getAttribute('name') instead of $args['name']

$name = $request->getAttribute('name');