`hasTeamRole()` throws error when `team_user.role` is `null` (but schema allows `null`)

[mattwells-coex]

Jetstream Version

5.1.1

Jetstream Stack

Livewire

Laravel Version

12.34.0

PHP Version

8.4.13

Database Driver & Version

No response

Description

Calling hasTeamRole($team, $role) on the HasTeams trait can result in a runtime error when the team_user.role column is null.

The Jetstream migration allows the role column to be nullable

The method passes the value directly into Jetstream::findRole which does not allow null.

Steps To Reproduce

<?php

use App\Models\Team;
use App\Models\User;
use Laravel\Jetstream\Tests\Fixtures\User as UserFixture;
use Laravel\Jetstream\Tests\OrchestraTestCase;

class HasTeamRoleTest extends OrchestraTestCase
{
    public function test_hasTeamRole_returns_false_when_member_pivot_role_is_null(): void
    {
        $team = Team::factory()->create();
        $user = UserFixture::find(User::factory()->create()->id);
        $user->teams()->attach($team, ['role' => null]);

        $this->assertFalse($user->hasTeamRole($team, 'admin'));
    }
}

Related Pull Request

See #1584 for a proposed fix. This issue documents the underlying bug for clarity.