screen_hint parameter not working with getAuthorizationUrl() method

[pbucko1]

Bug Description
The screen_hint parameter is not properly handled by the UserManagement::getAuthorizationUrl() method when trying to direct users to sign-up vs sign-in screens in AuthKit.

Expected Behavior
When using screen_hint: 'sign-up', users should be directed to the AuthKit registration screen.

Actual Behavior
The screen_hint parameter gets incorrectly encoded as connection_id[screen_hint] in the URL
This causes a WorkOS error: "Something went wrong - Couldn't sign in"
Users always see the sign-in screen regardless of the screen_hint value

Code Example - Not Working

use WorkOS\UserManagement;

// This doesn't work
$url = (new UserManagement)->getAuthorizationUrl(
    config('services.workos.redirect_url'),
    [
        'state' => $state = Str::random(20),
        'screen_hint' => 'sign-up'
    ],
    'authkit'
);

Generated URL (broken):
https://api.workos.com/user_management/authorize?client_id=xxx&response_type=code&redirect_uri=xxx&state=%7B%22state%22%3A%22xxx%22%7D&provider=authkit&connection_id%5Bscreen_hint%5D=sign-up

Workaround - Working

// Manual URL construction works
$params = [
    'client_id' => config('services.workos.client_id'),
    'response_type' => 'code',
    'redirect_uri' => config('services.workos.redirect_url'),
    'state' => $state,
    'provider' => 'authkit',
    'screen_hint' => 'sign-up'
];

$url = 'https://api.workos.com/user_management/authorize?' . http_build_query($params);

Generated URL (working):
https://api.workos.com/user_management/authorize?client_id=xxx&response_type=code&redirect_uri=xxx&state=xxx&provider=authkit&screen_hint=sign-up

WorkOS Package
name : workos/workos-php
descrip. : WorkOS PHP Library
keywords :
versions : * v4.26.0
released : 2025-06-23, last week
type : library
license : MIT License (MIT) (OSI approved) https://spdx.org/licenses/MIT.html#licenseText
homepage : https://workos.com
source : [git] https://github.com/workos/workos-php.git bb7b823
dist : [zip] https://api.github.com/repos/workos/workos-php/zipball/bb7b8233eb9fedd1d11365d2f1e51ec8a232620d bb7b823
names : workos/workos-php

Environment
PHP V: PHP 8.4.10 (cli) (built: Jul 4 2025 00:25:55) (NTS)
Laravel: v12.19.3

[blobaugh]

@pbucko1 did you ever resolve the issue you were having? From the method signature it looks like getAuthorizationUrl has the screen hint as the 8th parameter.

public function getAuthorizationUrl(
        $redirectUri,
        $state = null,
        $provider = null,
        $connectionId = null,
        $organizationId = null,
        $domainHint = null,
        $loginHint = null,
        $screenHint = null,
        $providerScopes = null
    )