## 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!

posthog/api/insight.py
from posthog.api.routing import StructuredViewSetMixin
from posthog.api.shared import UserBasicSerializer
from posthog.api.tagged_item import TaggedItemSerializerMixin, TaggedItemViewSetMixin
from posthog.api.utils import format_paginated_url
from posthog.constants import (
    BREAKDOWN_VALUES_LIMIT,
    FROM_DASHBOARD,
    INSIGHT,
    INSIGHT_FUNNELS,
    INSIGHT_PATHS,
    INSIGHT_STICKINESS,
    PATHS_INCLUDE_EVENT_TYPES,
    TRENDS_STICKINESS,
    FunnelVizType,
)
from posthog.decorators import cached_function
from posthog.helpers.multi_property_breakdown import protect_old_clients_from_multi_property_default
from posthog.models import Filter, Insight, Team
from posthog.models.dashboard import Dashboard
from posthog.models.filters import RetentionFilter
from posthog.models.filters.path_filter import PathFilter
from posthog.models.filters.stickiness_filter import StickinessFilter
from posthog.permissions import ProjectMembershipNecessaryPermissions, TeamMemberAccessPermission
from posthog.tasks.update_cache import update_dashboard_item_cache
from posthog.utils import get_safe_cache, relative_date_parse, str_to_bool
class InsightBasicSerializer(serializers.ModelSerializer):
    """
    Simplified serializer to speed response times when loading large amounts of objects.
    """
    class Meta: