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
import json
from datetime import datetime, timedelta
from typing import Any, Dict, List, Optional, Tuple
from unittest.case import skip
from unittest.mock import patch
import pytz
from django.db import DEFAULT_DB_ALIAS, connections
from django.test.utils import CaptureQueriesContext
from django.utils import timezone
from freezegun import freeze_time
from rest_framework import status
from ee.api.test.base import LicensedTestMixin
from ee.clickhouse.util import ClickhouseTestMixin
from ee.models import DashboardPrivilege
from ee.models.explicit_team_membership import ExplicitTeamMembership
from posthog.models import (
    Cohort,
    Dashboard,
    DashboardTile,
    Filter,
    Insight,
    InsightViewed,
    Person,
    Team,
    User,
)
from posthog.models.organization import OrganizationMembership
from posthog.tasks.update_cache import update_insight_cache
from posthog.test.base import APIBaseTest, QueryMatchingTest, _create_event, _create_person
class TestInsight(ClickhouseTestMixin, LicensedTestMixin, APIBaseTest, QueryMatchingTest):