feat(sms): simplify SMS settings to use only KAVENEGAR_API_KEY from env, remove other SMS-related fields from config

src/Sms/Controller/SmsWalletController.php

@@ -29,6 +29,8 @@ use OpenApi\Attributes as OA;
 #[IsGranted('IS_AUTHENTICATED_FULLY')]
 class SmsWalletController extends BaseController
 {
+    private const SMS_PRICE_RIALS = 500;
+
     public function __construct(
         private readonly SmsWalletService               $walletService,
         private readonly SmsWalletRepository            $walletRepo,
@@ -53,7 +55,7 @@ class SmsWalletController extends BaseController
         }
 
         $balanceRials  = $this->walletService->getBalance($entityType, $entityId);
-        $smsPriceRials = (int) ($this->configRepo->get('sms_price_rials') ?? 500);
+        $smsPriceRials = self::SMS_PRICE_RIALS;
         $estimatedSms  = $smsPriceRials > 0 ? (int) floor($balanceRials / $smsPriceRials) : 0;
 
         return $this->success([