Fix Role::users() relationship: use belongsToMany for many-to-many

[Copilot]

The Role::users() relationship used hasManyThrough for a many-to-many relationship through the users_roles_relations pivot table. hasManyThrough is designed for indirect relationships (A → B → C), not pivot tables (A ↔ pivot ↔ B).

Changes

src/Models/Role.php

• Changed users() from hasManyThrough(User, UserRoleRelation, ...) to belongsToMany(User, 'users_roles_relations', 'role_id', 'user_id')
• Added BelongsToMany return type
• Added required import

Before/After

// Before
public function users()
{
    return $this->hasManyThrough(
        User::class, UserRoleRelation::class,
        'role_id', 'id', 'id', 'user_id'
    );
}

// After  
public function users(): BelongsToMany
{
    return $this->belongsToMany(
        User::class, 'users_roles_relations',
        'role_id', 'user_id'
    );
}

The generated SQL now correctly joins users through the pivot table. All existing query methods (get(), count(), where(), etc.) remain compatible.

Original prompt

---

This section details on the original issue you should resolve

<issue_title>Quering Users Through Role instance.</issue_title>
<issue_description>There is a problem with the SQL used for the query that retrieves users using the model Ns\Models\Role (users relationship).

Output:

select * from `users` inner join `users_roles_relations` on `users_roles_relations`.`user_id` = `users`.`id` where `users_roles_relations`.`role_id` = ?"
```</issue_description>

<agent_instructions>Let's evaluate if this error might be accurate.</agent_instructions>

## Comments on the Issue (you are @copilot in this section)

<comments>
</comments>

• Fixes Quering Users Through Role instance. #1

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