fix: Hide markdown in chat list preview and local notifications

lib/pages/chat_list/chat_list_item.dart

@@ -267,6 +267,7 @@ class ChatListItem extends StatelessWidget {
                               hideReply: true,
                               hideEdit: true,
                               plaintextBody: true,
+                              removeMarkdown: true,
                               withSenderNamePrefix: !room.isDirectChat ||
                                   room.directChatMatrixID !=
                                       room.lastEvent?.senderId,

lib/widgets/local_notifications_extension.dart

@@ -38,6 +38,7 @@ extension LocalNotificationsExtension on MatrixState {
       plaintextBody: true,
       hideReply: true,
       hideEdit: true,
+      removeMarkdown: true,
     );
     final icon = event.sender.avatarUrl?.getThumbnail(client,
             width: 64, height: 64, method: ThumbnailMethod.crop) ??