Lower default for `SiteSetting.likes_notification_consolidation_threshold`.

Lower default for SiteSetting.likes_notification_consolidation_threshold.

diff --git a/config/site_settings.yml b/config/site_settings.yml
index 2f2ce61..ff5b8c1 100644
--- a/config/site_settings.yml
+++ b/config/site_settings.yml
@@ -1701,7 +1701,7 @@ uncategorized:
   disable_edit_notifications: false
 
   likes_notification_consolidation_threshold:
-    default: 5
+    default: 3
     min: 0
 
   likes_notification_consolidation_window_mins:

GitHub sha: c30f7879