design: Disappearing dividers between chats

lib/pages/views/chat_list_view.dart

@@ -195,7 +195,23 @@ class ChatListView extends StatelessWidget {
                                   );
                                 }
                                 final totalCount = rooms.length + 1;
-                                return ListView.builder(
+                                return ListView.separated(
+                                  separatorBuilder: (_, __) => Row(
+                                    children: [
+                                      Spacer(),
+                                      Container(
+                                        height: 1,
+                                        width: 200,
+                                        decoration: BoxDecoration(
+                                            gradient: LinearGradient(
+                                          colors: [
+                                            Colors.transparent,
+                                            Theme.of(context).dividerColor,
+                                          ],
+                                        )),
+                                      ),
+                                    ],
+                                  ),
                                   itemCount: totalCount,
                                   itemBuilder: (BuildContext context, int i) {
                                     if (i == 0) {