fix(archive_local_ads): remove explicit null assignment

- Remove unnecessary null assignment for 'exception' and 'restoredLocalAd'
- Simplify state copying by removing redundant code

Author: fulleni

lib/local_ads_management/bloc/archive_local_ads/archive_local_ads_state.dart

@@ -143,9 +143,8 @@ class ArchiveLocalAdsState extends Equatable {
       videoAds: videoAds ?? this.videoAds,
       videoAdsCursor: videoAdsCursor ?? this.videoAdsCursor,
       videoAdsHasMore: videoAdsHasMore ?? this.videoAdsHasMore,
-      exception: exception, // Explicitly set to null if not provided
-      restoredLocalAd:
-          restoredLocalAd, // Explicitly set to null if not provided
+      exception: exception,
+      restoredLocalAd: restoredLocalAd,
       lastPendingDeletionId: lastPendingDeletionId,
       snackbarLocalAdTitle: snackbarLocalAdTitle,
     );