Bug: Tooltips dont handle multiple series and breakdowns well.

Bug Description

Bug description

Please describe.

When there are multiple breakdowns and series the tooltip can be missing the breakdown from one or more of the series.

Additional context

From: https://posthoghelp.zendesk.com/agent/tickets/40009 (moved to PostHog: https://us.posthog.com/project/2/support/tickets/43469)

Debug info

Kind: bug

Target area: analytics

Report event: http://go/ticketByUUID/a07f52d3-b849-45f4-ba25-0fa295540d9b

Session: https://us.posthog.com/project/sTMFPsFhdP1Ssg/replay/0199e7af-6d61-7869-8b5a-0fc2b310c285?t=37262

Exceptions: https://us.posthog.com/project/2/error_tracking?filterGroup=%7B%22type%22%3A%22AND%22%2C%22values%22%3A%5B%7B%22type%22%3A%22AND%22%2C%22values%22%3A%5B%7B%22key%22%3A%22%24session_id%22%2C%22value%22%3A%5B%220199e7af-6d61-7869-8b5a-0fc2b310c285%22%5D%2C%22operator%22%3A%22exact%22%2C%22type%22%3A%22event%22%7D%5D%7D%5D%7D

Location: https://eu.posthog.com/project/50652/dashboard/139264

Persons-on-events mode for project: person_id_override_properties_joined

No files or tests are named. Start by reproducing the missing-breakdown behavior from the dashboard and session links in the report, then locate the analytics tooltip entry point for multiple series and breakdowns. Done means each series consistently shows its breakdown in the tooltip, with regression coverage if an existing test location is found.