refactor(mobile): remove int user id (#16814)

* refactor: user entity

* chore: rebase fixes

* refactor: remove int user Id

* refactor: migrate store userId from int to string

* refactor: rename uid to id

* fix: migration

* pr feedback

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Co-authored-by: shenlong-tanwen <139912620+shalong-tanwen@users.noreply.github.com>

mobile/lib/widgets/common/user_avatar.dart

@@ -8,7 +8,7 @@ import 'package:immich_mobile/services/api.service.dart';
 
 Widget userAvatar(BuildContext context, UserDto u, {double? radius}) {
   final url =
-      "${Store.get(StoreKey.serverEndpoint)}/users/${u.uid}/profile-image";
+      "${Store.get(StoreKey.serverEndpoint)}/users/${u.id}/profile-image";
   final nameFirstLetter = u.name.isNotEmpty ? u.name[0] : "";
   return CircleAvatar(
     radius: radius,