Custom route binding for enums doesn't work anymore

[larskoole]

Laravel Version

11.4.0

PHP Version

8.3.4

Database Driver & Version

No response

Description

We're using custom route binding to convert a fancy string to an int backed enum but it breaks with the new enum handling in routes.

For example https://test.test/sales-orders/... will translate sales-orders to OrderType::SALES_ORDER.
But with the new changes from #51029 this doesn't work anymore.
It tries to convert $parameterValue to a string but it's already OrderType::SALES_ORDER.

web.php

Route::get('/{orderType}');

AppServiceProvider.php

Route::bind('orderType', function ($orderType) {
    return match ($orderType) {
        'sales-orders' => OrderType::SALES_ORDER,
        default => abort(404),
    };
});

We've fixed the issue by not returning the instantiated enum but just extracting the value out of it, aka returning an int.
Would be cool if $parameterValue could be checked to see if it's already an instantiated enum.

Steps To Reproduce

Create an int backed enum

<?php

namespace App\Enums;

enum OrderType: int
{
    case SALES_ORDER = 1;
}

Add a route to the web.php

Route::get('/{orderType}');

Add model binding to the AppServiceProvider.php

Route::bind('orderType', function ($orderType) {
    return match ($orderType) {
        'sales-orders' => OrderType::SALES_ORDER,
        default => abort(404),
    };
});

Navigate to https://yourdomain.test/sales-orders

[driesvints]

Thank you. I sent in a revert: #51119