fix sync and show the button on iOS only

mobile/lib/infrastructure/repositories/sync_stream.repository.dart

@@ -265,7 +265,7 @@ class SyncStreamRepository extends DriftDatabaseRepository {
             final map = metadata.value as Map<String, Object?>;
             final companion = RemoteAssetCloudIdEntityCompanion(cloudId: Value(map['iCloudId']?.toString()));
             batch.insert(
-              _db.remoteAssetEntity,
+              _db.remoteAssetCloudIdEntity,
               companion.copyWith(assetId: Value(metadata.assetId)),
               onConflict: DoUpdate((_) => companion),
             );

mobile/lib/widgets/settings/beta_sync_settings/beta_sync_settings.dart

@@ -301,6 +301,7 @@ class BetaSyncSettings extends HookConsumerWidget {
                   ref.read(backgroundSyncProvider).hashAssets();
                 },
               ),
+              if (Platform.isIOS)
                 ListTile(
                   title: Text(
                     "sync_cloud_ids".t(context: context),