Merge pull request #2774 from krille-chan/krille/chat-view-crash

fix: Chat view crashes if events list empty

lib/pages/chat/chat_event_list.dart

@@ -77,7 +77,7 @@ class ChatEventList extends StatelessWidget {
               return Column(
                 mainAxisSize: .min,
                 children: [
-                  SeenByRow(event: events.first),
+                  if (events.isNotEmpty) SeenByRow(event: events.first),
                   TypingIndicators(controller),
                 ],
               );