fix: memory lane assets in ascending order (#8309)

* fix: memory lane asset order

* chore: deprecate title

* chore: open-api

* chore: rename years => yearsAgo

mobile/openapi/test/memory_lane_response_dto_test.dart

@@ -26,6 +26,11 @@ void main() {
       // TODO
     });
 
+    // num yearsAgo
+    test('to test the property `yearsAgo`', () async {
+      // TODO
+    });
+
 
   });