chore: Better display rooms without known messages

lib/l10n/intl_en.arb

@@ -3374,5 +3374,6 @@
   "moreEvents": "More events",
   "@moreEvents": {},
   "declineInvitation": "Decline invitation",
-  "@declineInvitation": {}
+  "@declineInvitation": {},
+  "noMessagesYet": "No messages yet"
 }

lib/pages/chat_list/chat_list_item.dart

@@ -202,13 +202,12 @@ class ChatListItem extends StatelessWidget {
                         color: theme.colorScheme.primary,
                       ),
                     ),
-                  if (!room.isSpace &&
+                  if (!room.isSpace && room.membership != Membership.invite)
-                      lastEvent != null &&
-                      room.membership != Membership.invite)
                     Padding(
                       padding: const EdgeInsets.only(left: 4.0),
                       child: Text(
-                        lastEvent.originServerTs.localizedTimeShort(context),
+                        room.latestEventReceivedTime
+                            .localizedTimeShort(context),
                         style: TextStyle(
                           fontSize: 12,
                           color: theme.colorScheme.outline,
@@ -303,7 +302,7 @@ class ChatListItem extends StatelessWidget {
                                               : L10n.of(context)
                                                   .inviteGroupChat)
                                       : snapshot.data ??
-                                          L10n.of(context).emptyChat,
+                                          L10n.of(context).noMessagesYet,
                                   softWrap: false,
                                   maxLines: room.notificationCount >= 1 ? 2 : 1,
                                   overflow: TextOverflow.ellipsis,