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/test/test_insight.py
db_connection = connections[DEFAULT_DB_ALIAS]
        query_counts: List[int] = []
        queries = []
        for i in range(20):
            user = User.objects.create(email=f"testuser{i}@posthog.com")
            OrganizationMembership.objects.create(user=user, organization=self.organization)
            dashboard = Dashboard.objects.create(name=f"Dashboard {i}", team=self.team)
            self._create_insight(
                data={
                    "short_id": f"insight{i}",
                    "dashboards": [dashboard.pk],
                    "filters": {"events": [{"id": "$pageview"}]},
                }
            )
            self.assertEqual(Insight.objects.count(), i + 1)
            with CaptureQueriesContext(db_connection) as capture_query_context:
                response = self.client.get(f"/api/projects/{self.team.id}/insights")
                self.assertEqual(response.status_code, status.HTTP_200_OK)
                self.assertEqual(len(response.json()["results"]), i + 1)
            query_count_for_create_and_read = len(capture_query_context.captured_queries)
            queries.append(capture_query_context.captured_queries)
            query_counts.append(query_count_for_create_and_read)
        
        self.assertTrue(
            all(x == query_counts[0] for x in query_counts),
            f"received query counts\n\n{query_counts}\n\nwith queries:\n\n{queries}",
        )
    @freeze_time("2012-01-14T03:21:34.000Z")
    def test_create_insight_items(self):