Steps to replicate the issue (include links if applicable):

• Navigate to Special:TopicSubscriptions.
• Subscribe to a topic manually or ensure you are auto-subscribed to a topic.
• Trigger a notification for that topic (e.g., add a new comment or update).
• Confirm that a notification is received (via Echo/Alerts).
• Return to Special:TopicSubscriptions.
• Observe the "Latest notification" column for the subscribed topic.

What happens?:

• A notification is successfully received for the subscribed topic.
• The "Latest notification" column on Special:TopicSubscriptions does not update to reflect the new activity.

What should have happened instead?:

• The "Latest notification" column on Special:TopicSubscriptions should update to reflect the most recent notification timestamp or activity for the subscribed topic whenever a new notification is received.

Environment: Meta Beta
OS: macOS Tahoe 26.4
Browser: Chrome 146
Device: MBA

Other information (browser name/version, screenshots, etc.):

Related to https://phabricator.wikimedia.org/T421163

When Auto Subscribed	Manually Subscribed