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
if not insight.filters:
            return None
        dashboard = self.context.get("dashboard", None)
        if should_refresh(self.context["request"]):
            return update_insight_cache(insight, dashboard)
        cache_key = insight.filters_hash
        if dashboard is not None:
            dashboard_tile = self.dashboard_tile_from_context(insight, dashboard)
            if dashboard_tile is not None:
                cache_key = dashboard_tile.filters_hash
                if cache_key is None:
                    
                    
                    generated_filters_hash = generate_insight_cache_key(insight, dashboard)
                    dashboard_tile.filters_hash = generated_filters_hash
                    dashboard_tile.save(update_fields=["filters_hash"])
                    cache_key = generated_filters_hash
        self.context.update({"filters_hash": cache_key})
        result = get_safe_cache(cache_key)
        if not result or result.get("task_id", None):
            return None
        
        return result.get("result")
    def get_last_refresh(self, insight: Insight):