[12.x] Add mergeHidden and mergeVisible methods to Collection class

[mahmoudmohamedramadan]

This PR extends the mergeHidden and mergeVisible methods to Eloquent Collections, allowing you to adjust attribute visibility across an entire collection—not just individual models.

// App\Models\User

use Illuminate\Foundation\Auth\User as Authenticatable;

class User extends Authenticatable
{
    /**
     * The attributes that are mass assignable.
     *
     * @var array<int, string>
     */
    protected $fillable = [
        'name',
        'email',
        'password',
        'last_login_at',
    ];

    /**
     * The attributes that should be hidden for serialization.
     *
     * @var array<string>
     */
    protected $hidden = [
        'password',
        'remember_token',
        'last_login_at',
    ];

    /**
     * The attributes that should be visible in serialization.
     *
     * @var array<string>
     */
    protected $visible = [
        'name',
        'email',
    ];
}

Runtime Usage

use App\Models\User;

$users = User::withWhereHas('comments')->get();

// Temporarily expose hidden attributes for all models in the collection
$users->mergeVisible(['last_login_at']);

// Temporarily hide attributes across the collection
$users->mergeHidden(['email']);