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
insight_id, insight = self._create_insight({"name": "should not update the filters_hash"})
        original_filters_hash = insight["filters_hash"]
        self.assertIsNotNone(original_filters_hash)
        response = self.client.patch(
            f"/api/projects/{self.team.id}/insights/{insight_id}", {"filters_hash": "should not update the value"},
        )
        self.assertEqual(response.status_code, status.HTTP_200_OK)
        self.assertEqual(response.json()["filters_hash"], original_filters_hash)
    @skip("Compatibility issue caused by test account filters")
    def test_update_insight_filters(self):
        insight = Insight.objects.create(
            team=self.team,
            name="insight with custom filters",
            created_by=self.user,
            filters={"events": [{"id": "$pageview"}]},
        )
        for custom_name, expected_name in zip(
            ["Custom filter", 100, "", "  ", None], ["Custom filter", "100", None, None, None]
        ):
            response = self.client.patch(
                f"/api/projects/{self.team.id}/insights/{insight.id}",
                {"filters": {"events": [{"id": "$pageview", "custom_name": custom_name}]}},
            )
            self.assertEqual(response.status_code, status.HTTP_200_OK)
            response_data = response.json()
            self.assertEqual(response_data["filters"]["events"][0]["custom_name"], expected_name)
            insight.refresh_from_db()
            self.assertEqual(insight.filters["events"][0]["custom_name"], expected_name)
    def test_save_new_funnel(self):