Bug: Compare to previous period disappears in area graph for trend insights

[abigailbramble]

Bug Description

Bug description

Option to compare to previous period is not editable if using an area graph

Additional context

From: https://posthoghelp.zendesk.com/agent/tickets/25696

Debug info

Kind: bug

Target area: notebooks

Report event: http://go/ticketByUUID/99f4c648-cc9e-4b8d-9a9f-e7b49128b57d

Session: https://us.posthog.com/project/sTMFPsFhdP1Ssg/replay/0195231c-be2e-78ef-9fe2-77057ce24d10?t=3014

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%220195231c-be2e-78ef-9fe2-77057ce24d10%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/23408/notebooks/kdIRCrzB

Sentry: http://go/sentryEU/23408

Persons-on-events mode for project: person_id_override_properties_on_events