fix(iap): address code review defects in freemium/IAP change

Fixes 9 of 10 review findings (10th requires a manual Play Console
step, no code change):

1. app.dart/banner_anuncio_superior.dart: move the top SafeArea inside
   BannerAnuncioSuperior so it only reserves status-bar height when an
   ad actually renders, restoring edge-to-edge layout for premium and
   free-unloaded users.
2. servicio_anuncios.dart: bound every interstitial await (load,
   presentation, and the injected implementation itself) with
   injectable timeouts so a callback that never fires can no longer
   hang a caller.
3. estado_entitlement.dart/hoja_premium.dart: expose a typed
   resultadoUsuario signal for purchase/restore failures and
   restore-found-nothing, with dedicated localized messages
   (compraError, restauracionSinCompras) across all 13 locales --
   never the raw developer/exception string.
4. main.dart/servicio_consentimiento.dart: add a GDPR/UMP consent flow
   (ConsentInformation/ConsentForm) that gates Mobile Ads SDK init on
   canRequestAds(); premium users never see a consent form; failures
   degrade to no ads instead of crashing or blocking startup.
6. servicio_anuncios.dart: track real ad presentation
   (onAdShowedFullScreenContent) so a failed-to-show interstitial no
   longer consumes a session cap slot.
7. banner_anuncio_superior.dart: add an explicit load-attempted guard
   so repeated didChangeDependencies (e.g. entitlement notifyListeners
   during a purchase) can only ever trigger one banner load attempt.
8. servicio_anuncios.dart: make esPremium a required constructor
   parameter, matching the hardened contract already applied to
   EstadoAlarmas/EstadoGrabacion/EstadoRadio.
9. hoja_premium.dart: add a dedicated premiumActivo localized string
   instead of reusing the equalizer's equalizerActive translation,
   across all 13 locales.

All fixes implemented RED-first (failing test before production
code). Full suite: 1261 passed, 2 pre-existing skips, 0 failures.
flutter analyze: 5 pre-existing issues only, 0 new.

[version set]

lib/l10n/gen/app_localizations.dart

@@ -3349,6 +3349,24 @@ abstract class AppLocalizations {
   /// In es, this message translates to:
   /// **'Restaurar compras'**
   String get restaurarCompras;
+
+  /// No description provided for @compraError.
+  ///
+  /// In es, this message translates to:
+  /// **'No se ha podido completar la compra. Inténtalo de nuevo.'**
+  String get compraError;
+
+  /// No description provided for @restauracionSinCompras.
+  ///
+  /// In es, this message translates to:
+  /// **'No hemos encontrado ninguna compra anterior en esta cuenta.'**
+  String get restauracionSinCompras;
+
+  /// No description provided for @premiumActivo.
+  ///
+  /// In es, this message translates to:
+  /// **'Premium activo'**
+  String get premiumActivo;
 }
 
 class _AppLocalizationsDelegate

lib/l10n/gen/app_localizations_ar.dart

@@ -1853,4 +1853,14 @@ class AppLocalizationsAr extends AppLocalizations {
 
   @override
   String get restaurarCompras => 'استعادة المشتريات';
+
+  @override
+  String get compraError => 'تعذّر إتمام عملية الشراء. حاول مرة أخرى.';
+
+  @override
+  String get restauracionSinCompras =>
+      'لم نجد أي عملية شراء سابقة في هذا الحساب.';
+
+  @override
+  String get premiumActivo => 'النسخة المميزة مفعّلة';
 }

lib/l10n/gen/app_localizations_bn.dart

@@ -1864,4 +1864,14 @@ class AppLocalizationsBn extends AppLocalizations {
 
   @override
   String get restaurarCompras => 'কেনাকাটা পুনরুদ্ধার করুন';
+
+  @override
+  String get compraError => 'কেনাকাটা সম্পূর্ণ করা যায়নি। আবার চেষ্টা করুন।';
+
+  @override
+  String get restauracionSinCompras =>
+      'এই অ্যাকাউন্টে আমরা আগের কোনো কেনাকাটা খুঁজে পাইনি।';
+
+  @override
+  String get premiumActivo => 'প্রিমিয়াম সক্রিয়';
 }

lib/l10n/gen/app_localizations_de.dart

@@ -1877,4 +1877,15 @@ class AppLocalizationsDe extends AppLocalizations {
 
   @override
   String get restaurarCompras => 'Käufe wiederherstellen';
+
+  @override
+  String get compraError =>
+      'Der Kauf konnte nicht abgeschlossen werden. Bitte versuche es erneut.';
+
+  @override
+  String get restauracionSinCompras =>
+      'Wir haben auf diesem Konto keinen früheren Kauf gefunden.';
+
+  @override
+  String get premiumActivo => 'Premium aktiv';
 }

lib/l10n/gen/app_localizations_en.dart

@@ -1856,4 +1856,15 @@ class AppLocalizationsEn extends AppLocalizations {
 
   @override
   String get restaurarCompras => 'Restore purchases';
+
+  @override
+  String get compraError =>
+      'We couldn\'t complete the purchase. Please try again.';
+
+  @override
+  String get restauracionSinCompras =>
+      'We didn\'t find any previous purchase on this account.';
+
+  @override
+  String get premiumActivo => 'Premium active';
 }

lib/l10n/gen/app_localizations_es.dart

@@ -1870,4 +1870,15 @@ class AppLocalizationsEs extends AppLocalizations {
 
   @override
   String get restaurarCompras => 'Restaurar compras';
+
+  @override
+  String get compraError =>
+      'No se ha podido completar la compra. Inténtalo de nuevo.';
+
+  @override
+  String get restauracionSinCompras =>
+      'No hemos encontrado ninguna compra anterior en esta cuenta.';
+
+  @override
+  String get premiumActivo => 'Premium activo';
 }

lib/l10n/gen/app_localizations_fr.dart

@@ -1883,4 +1883,15 @@ class AppLocalizationsFr extends AppLocalizations {
 
   @override
   String get restaurarCompras => 'Restaurer les achats';
+
+  @override
+  String get compraError =>
+      'Impossible de finaliser l\'achat. Veuillez réessayer.';
+
+  @override
+  String get restauracionSinCompras =>
+      'Nous n\'avons trouvé aucun achat antérieur sur ce compte.';
+
+  @override
+  String get premiumActivo => 'Premium actif';
 }

lib/l10n/gen/app_localizations_hi.dart

@@ -1857,4 +1857,14 @@ class AppLocalizationsHi extends AppLocalizations {
 
   @override
   String get restaurarCompras => 'खरीदारी पुनर्स्थापित करें';
+
+  @override
+  String get compraError => 'खरीद पूरी नहीं हो सकी। कृपया फिर से प्रयास करें।';
+
+  @override
+  String get restauracionSinCompras =>
+      'इस खाते में हमें कोई पिछली खरीद नहीं मिली।';
+
+  @override
+  String get premiumActivo => 'प्रीमियम सक्रिय';
 }

lib/l10n/gen/app_localizations_id.dart

@@ -1867,4 +1867,15 @@ class AppLocalizationsId extends AppLocalizations {
 
   @override
   String get restaurarCompras => 'Pulihkan pembelian';
+
+  @override
+  String get compraError =>
+      'Pembelian tidak dapat diselesaikan. Silakan coba lagi.';
+
+  @override
+  String get restauracionSinCompras =>
+      'Kami tidak menemukan pembelian sebelumnya di akun ini.';
+
+  @override
+  String get premiumActivo => 'Premium aktif';
 }

lib/l10n/gen/app_localizations_it.dart

@@ -1880,4 +1880,15 @@ class AppLocalizationsIt extends AppLocalizations {
 
   @override
   String get restaurarCompras => 'Ripristina acquisti';
+
+  @override
+  String get compraError =>
+      'Non è stato possibile completare l\'acquisto. Riprova.';
+
+  @override
+  String get restauracionSinCompras =>
+      'Non abbiamo trovato acquisti precedenti su questo account.';
+
+  @override
+  String get premiumActivo => 'Premium attivo';
 }

lib/l10n/gen/app_localizations_ja.dart

@@ -1803,4 +1803,13 @@ class AppLocalizationsJa extends AppLocalizations {
 
   @override
   String get restaurarCompras => '購入を復元';
+
+  @override
+  String get compraError => '購入を完了できませんでした。もう一度お試しください。';
+
+  @override
+  String get restauracionSinCompras => 'このアカウントでは以前の購入が見つかりませんでした。';
+
+  @override
+  String get premiumActivo => 'プレミアム有効';
 }

lib/l10n/gen/app_localizations_pt.dart

@@ -1867,4 +1867,15 @@ class AppLocalizationsPt extends AppLocalizations {
 
   @override
   String get restaurarCompras => 'Restaurar compras';
+
+  @override
+  String get compraError =>
+      'Não foi possível concluir a compra. Tente novamente.';
+
+  @override
+  String get restauracionSinCompras =>
+      'Não encontramos nenhuma compra anterior nesta conta.';
+
+  @override
+  String get premiumActivo => 'Premium ativo';
 }

lib/l10n/gen/app_localizations_ru.dart

@@ -1874,4 +1874,14 @@ class AppLocalizationsRu extends AppLocalizations {
 
   @override
   String get restaurarCompras => 'Восстановить покупки';
+
+  @override
+  String get compraError => 'Не удалось завершить покупку. Попробуйте ещё раз.';
+
+  @override
+  String get restauracionSinCompras =>
+      'Мы не нашли предыдущих покупок на этом аккаунте.';
+
+  @override
+  String get premiumActivo => 'Премиум активен';
 }

lib/l10n/gen/app_localizations_zh.dart

@@ -1788,4 +1788,13 @@ class AppLocalizationsZh extends AppLocalizations {
 
   @override
   String get restaurarCompras => '恢复购买';
+
+  @override
+  String get compraError => '无法完成购买，请重试。';
+
+  @override
+  String get restauracionSinCompras => '未在此账户中找到以前的购买记录。';
+
+  @override
+  String get premiumActivo => '高级版已解锁';
 }