Bug: Personless events in lifecycle insights appear as resurrected

[darkopia]

Bug Description

When using a lifecycle insight and anonymous events, the new persons appear in the resurrected section because their event.person.created_at is epoch date.

How to reproduce

1. Have anonymous events
2. Create a lifecycle query
3. Notice that all new users in the lifecylce insight appear as resurrected.

Additional context

https://posthoghelp.zendesk.com/agent/tickets/18726

Debug info

- [ ] PostHog Cloud, Debug information: [please copy/paste from https://us.posthog.com/settings/project-details#variables or https://eu.posthog.com/settings/project-details#variables]

[darkopia]

https://posthoghelp.zendesk.com/agent/tickets/19149

[darkopia]

https://posthoghelp.zendesk.com/agent/tickets/18802

[darkopia]

https://posthoghelp.zendesk.com/agent/tickets/19304

[darkopia]

https://posthoghelp.zendesk.com/agent/tickets/21450

[HaynesPostHog]

https://posthoghelp.zendesk.com/agent/tickets/22134