[PRO] Subscription Topics dashboard index appears to be out of date

Describe the bug

Sometimes when I click on a topic that I see listed in the dashboard, the list of subscriptions is blank. Then when i navigate back out to the index and refresh, that subscription is gone. It seems to be the act of viewing the topic refreshes the data or something?

https://github.com/user-attachments/assets/a34872f6-1c47-4bf0-808c-e0772d8cc90f

I am pretty sure these aren't just churning out while i'm looking at the page, because I can go back several pages and click on one to reproduce the behavior.

NOTE: we're using the Ably integration.

Versions

graphql version: graphql-pro (1.29.2)
rails (or other framework): 7.2.1

Steps to reproduce

1. Click on various topics in the subscription index.
2. Sometimes when you get onto the topics page, the page will be blank and have no subscriptions listed.

Expected behavior

The topic should not be listed if there are no longer subscribers

Actual behavior

The topic is appearing in the list despite having no subscribers (I think!)

Additional context

This may not be a huge problem, but I want to have confidence that the system is working properly and it's not attempting to send messages to old/unused topics.

Reproduce the issue by opening several entries in the subscription topics index, then inspect the topic detail page and the Ably integration involved in loading subscriptions. Compare the index data with the detail result after refreshing. Done means topics with no subscribers no longer remain listed, with regression coverage for the observed mismatch.