## 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
try:
            serializer = FunnelSerializer(request=request)
            serializer.is_valid(raise_exception=True)
        except Exception as e:
            capture_exception(e)
        funnel = self.calculate_funnel(request)
        funnel["result"] = protect_old_clients_from_multi_property_default(request.data, funnel["result"])
        return Response(funnel)
    @cached_function
    def calculate_funnel(self, request: request.Request) -> Dict[str, Any]:
        team = self.team
        filter = Filter(request=request, data={"insight": INSIGHT_FUNNELS}, team=self.team)
        if filter.funnel_viz_type == FunnelVizType.TRENDS:
            return {"result": ClickhouseFunnelTrends(team=team, filter=filter).run()}
        elif filter.funnel_viz_type == FunnelVizType.TIME_TO_CONVERT:
            return {"result": ClickhouseFunnelTimeToConvert(team=team, filter=filter).run()}
        else:
            funnel_order_class = get_funnel_order_class(filter)
            return {"result": funnel_order_class(team=team, filter=filter).run()}
    
    
    
    
    
    
    @action(methods=["GET"], detail=False)
    def retention(self, request: request.Request, *args: Any, **kwargs: Any) -> Response: