fix(mail-campaigns): resolve-emails returns only uuid/fullname/email

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

app/Http/Controllers/Api/Admin/MailCampaign/MailCampaignController.php

@@ -6,7 +6,6 @@ namespace App\Http\Controllers\Api\Admin\MailCampaign;
 
 use App\Http\Controllers\Api\Admin\MailCampaign\Concerns\HandlesCampaignBulkActions;
 use App\Http\Controllers\Controller;
-use App\Http\Resources\Api\Admin\CustomerResource;
 use App\Jobs\Mail\SendMailCampaignRecipient;
 use App\Models\Customer;
 use App\Models\Mail;
@@ -219,7 +218,11 @@ final class MailCampaignController extends Controller
         return response()->json([
             'error' => false,
             'data'  => [
-                'customers'    => CustomerResource::collection($customers->values()),
+                'customers'    => $customers->values()->map(fn (Customer $customer) => [
+                    'uuid'     => $customer->uuid,
+                    'fullname' => $customer->fullname,
+                    'email'    => $customer->email,
+                ]),
                 'unregistered' => array_values(array_diff($emails, $registered)),
             ],
         ]);