## Bug description

If I mark an insight as a favorite (⭐) and then refresh, the insight is no longer marked as a favorite although it is (can see it in Favorites).

<img width="390" alt="image" src="https://user-images.githubusercontent.com/30181361/182802236-9ecf0531-899c-4f25-ae86-bc233cefdc2f.png">

Note that I'm in the _Favorites_ tab and that _Bug example_ is not starred.
## Environment

- [x] PostHog Cloud
- [ ] self-hosted PostHog, version/commit: please provide

posthog/api/test/test_insight.py
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 capture_db_queries() 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):