Show more state is based on index rather than uuid

[MarconLP]

How to reproduce

1. Visit https://us.posthog.com/project/2/events
2. Expend the 2nd event
3. Click refresh
4. The 2nd event is still expanded but is a completely different event.

Additional context

https://posthoghelp.zendesk.com/agent/tickets/10603

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