## 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
filter_dict = {
            "events": [{"id": "$pageview"}],
        }
        Insight.objects.create(
            filters=Filter(data=filter_dict).to_dict(), team=self.team, short_id="12345678",
        )
        
        new_team = Team.objects.create(organization=self.organization)
        Insight.objects.create(
            filters=Filter(data=filter_dict).to_dict(), team=new_team, short_id="12345678",
        )
        response = self.client.get(f"/api/projects/{self.team.id}/insights/?short_id=12345678")
        self.assertEqual(response.status_code, status.HTTP_200_OK)
        self.assertEqual(len(response.json()["results"]), 1)
        self.assertEqual(response.json()["results"][0]["short_id"], "12345678")
        self.assertEqual(response.json()["results"][0]["filters"]["events"][0]["id"], "$pageview")
    def test_basic_results(self):
        """
        The `skip_results` query parameter can be passed so that only a list of objects is returned, without
        the actual query data. This can speed things up if it's not needed.
        """
        filter_dict = {
            "events": [{"id": "$pageview"}],