chore: use totalAssets from service

mobile/lib/presentation/widgets/bottom_sheet/map_bottom_sheet.widget.dart

@@ -1,5 +1,9 @@
+import 'dart:async';
+
 import 'package:flutter/material.dart';
 import 'package:hooks_riverpod/hooks_riverpod.dart';
+import 'package:immich_mobile/domain/models/events.model.dart';
+import 'package:immich_mobile/domain/utils/event_stream.dart';
 import 'package:immich_mobile/extensions/build_context_extensions.dart';
 import 'package:immich_mobile/generated/translations.g.dart';
 import 'package:immich_mobile/presentation/widgets/bottom_sheet/base_bottom_sheet.widget.dart';
@@ -29,11 +33,6 @@ class MapBottomSheet extends StatelessWidget {
   }
 }
 
-final _mapAssetCountProvider = StreamProvider.autoDispose<int>((ref) {
-  final service = ref.watch(timelineServiceProvider);
-  return service.watchBuckets().map((buckets) => buckets.fold(0, (acc, b) => acc + b.assetCount));
-}, dependencies: [timelineServiceProvider]);
-
 class _ScopedMapTimeline extends StatelessWidget {
   const _ScopedMapTimeline();
 
@@ -64,12 +63,31 @@ class _ScopedMapTimeline extends StatelessWidget {
   }
 }
 
-class _MapTimelineContent extends ConsumerWidget {
+class _MapTimelineContent extends ConsumerStatefulWidget {
   const _MapTimelineContent();
 
   @override
-  Widget build(BuildContext context, WidgetRef ref) {
-    final count = ref.watch(_mapAssetCountProvider).valueOrNull ?? 0;
+  ConsumerState<_MapTimelineContent> createState() => _MapTimelineContentState();
+}
+
+class _MapTimelineContentState extends ConsumerState<_MapTimelineContent> {
+  StreamSubscription? _reloadSubscription;
+
+  @override
+  void initState() {
+    super.initState();
+    _reloadSubscription = EventStream.shared.listen<TimelineReloadEvent>((_) => setState(() {}));
+  }
+
+  @override
+  void dispose() {
+    _reloadSubscription?.cancel();
+    super.dispose();
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    final count = ref.watch(timelineServiceProvider.select((s) => s.totalAssets));
     return Column(
       children: [
         Text(context.t.map_assets_in_bounds(count: count), style: context.themeData.textTheme.headlineSmall),