fix warning

mobile/lib/services/share.service.dart

@@ -1,13 +1,15 @@
+import 'dart:async';
 import 'dart:io';
 
 import 'package:flutter/material.dart';
 import 'package:hooks_riverpod/hooks_riverpod.dart';
-import 'package:immich_mobile/extensions/response_extensions.dart';
 import 'package:immich_mobile/entities/asset.entity.dart';
+import 'package:immich_mobile/extensions/response_extensions.dart';
 import 'package:immich_mobile/providers/api.provider.dart';
 import 'package:logging/logging.dart';
 import 'package:path_provider/path_provider.dart';
 import 'package:share_plus/share_plus.dart';
+
 import 'api.service.dart';
 
 final shareServiceProvider = Provider((ref) => ShareService(ref.watch(apiServiceProvider)));
@@ -58,9 +60,11 @@ class ShareService {
       }
 
       final size = MediaQuery.of(context).size;
-      Share.shareXFiles(
-        downloadedXFiles,
-        sharePositionOrigin: Rect.fromPoints(Offset.zero, Offset(size.width / 3, size.height)),
+      unawaited(
+        Share.shareXFiles(
+          downloadedXFiles,
+          sharePositionOrigin: Rect.fromPoints(Offset.zero, Offset(size.width / 3, size.height)),
+        ),
       );
       return true;
     } catch (error) {