## Bug description

I have lost edit permissions to a [dashboard I created](https://app.posthog.com/dashboard/28987), despite still being listed as the owner of the dashboard

## Expected behavior

I should still be able to edit the dashboard

## How to reproduce

I noticed this problem after adding a new insight, but this doesn't appear to be the cause of the issue. I've duplicated the dashboard to restore access and adding a new insight didn't appear to cause the issue 

## Environment

- [x] PostHog Cloud
- [ ] self-hosted PostHog (ClickHouse-based), version/commit: _please provide_
- [ ] self-hosted PostHog (Postgres-based, legacy), version/commit: _please provide_

## Additional context

#### *Thank you* for your bug report – we love squashing them!

ee/api/test/test_dashboard.py
from rest_framework import status
from ee.api.test.base import APILicensedTest
from ee.models.explicit_team_membership import ExplicitTeamMembership
from ee.models.license import License
from posthog.models import OrganizationMembership
from posthog.models.dashboard import Dashboard
from posthog.models.user import User
class TestDashboardEnterpriseAPI(APILicensedTest):