still use lazy loading for internal members list

commet/lib/client/matrix/matrix_room.dart

@@ -24,7 +24,6 @@ import 'package:commet/debug/log.dart';
 import 'package:commet/main.dart';
 import 'package:commet/utils/image_utils.dart';
 import 'package:commet/utils/mime.dart';
-import 'package:commet/utils/notifying_list.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter/widgets.dart';
 import 'package:html_unescape/html_unescape.dart';
@@ -53,11 +52,6 @@ class MatrixRoom extends Room {
 
   late final List<RoomComponent<MatrixClient, MatrixRoom>> _components;
 
-  final NotifyingList<String> _memberIds = NotifyingList.empty(growable: true);
-
-  @override
-  Stream<void> get membersUpdated => _memberIds.onListUpdated;
-
   ImageProvider? _avatar;
 
   late MatrixClient _client;
@@ -100,7 +94,8 @@ class MatrixRoom extends Room {
   TimelineEvent? lastEvent;
 
   @override
-  Iterable<String> get memberIds => _memberIds;
+  Iterable<String> get memberIds =>
+      _matrixRoom.getParticipants([matrix.Membership.join]).map((e) => e.id);
 
   @override
   String get developerInfo =>

commet/lib/client/room.dart

@@ -49,9 +49,6 @@ abstract class Room {
   /// Stream which is called when the room state updates
   Stream<void> get onUpdate;
 
-  /// Stream which gets called when the members list is updated
-  Stream<void> get membersUpdated;
-
   /// Rule for push notifications for this room
   PushRule get pushRule;