When exporting data from [an insight](https://app.posthog.com/insights/oVHjTLUD), the action names weren't exported, making the CSV a little hard to follow.

As a user, I'd expect to see the same data in the export as I see in the table in-app.

<img width="1012" alt="image" src="https://user-images.githubusercontent.com/154479/166958828-9b3add76-633b-4f1d-ad2b-cf1ea2888b95.png">

posthog/api/insight.py
result = self.calculate_path(request)
        return Response(result)
    @cached_function
    def calculate_path(self, request: request.Request) -> Dict[str, Any]:
        team = self.team
        filter = PathFilter(request=request, data={"insight": INSIGHT_PATHS}, team=self.team)
        funnel_filter = None
        funnel_filter_data = request.GET.get("funnel_filter") or request.data.get("funnel_filter")
        if funnel_filter_data:
            if isinstance(funnel_filter_data, str):
                funnel_filter_data = json.loads(funnel_filter_data)
            funnel_filter = Filter(data={"insight": INSIGHT_FUNNELS, **funnel_filter_data}, team=self.team)
        
        if filter.path_type:
            filter = filter.with_data({PATHS_INCLUDE_EVENT_TYPES: [filter.path_type]})
        resp = ClickhousePaths(filter=filter, team=team, funnel_filter=funnel_filter).run()
        return {"result": resp}
    
    
    
    
    @action(methods=["POST"], detail=True)
    def viewed(self, request: request.Request, *args: Any, **kwargs: Any) -> Response: