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
with freeze_time("2012-01-14T03:21:34.000Z"):
            for i in range(25):
                _create_event(
                    team=self.team, event="$pageview", distinct_id="1", properties={"$some_property": f"value{i}"},
                )
        with freeze_time("2012-01-15T04:01:34.000Z"):
            response = self.client.get(
                f"/api/projects/{self.team.id}/insights/trend/",
                data={
                    "events": json.dumps([{"id": "$pageview"}]),
                    "breakdown": "$some_property",
                    "breakdown_type": "event",
                },
            )
        self.assertEqual(response.status_code, status.HTTP_200_OK)
        self.assertIn("offset=25", response.json()["next"])
    def test_insight_paths_basic(self):