## 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
people = journeys_for(
            {
                "1": [
                    {"event": "$pageview", "properties": {"$session_id": "one"}, "timestamp": "2012-01-14 00:16:00"},
                    {
                        "event": "$pageview",
                        "properties": {"$session_id": "one"},
                        "timestamp": "2012-01-14 00:16:10",
                    },  # 
                    {"event": "$pageview", "properties": {"$session_id": "two"}, "timestamp": "2012-01-15 00:16:00"},
                    {
                        "event": "$pageview",
                        "properties": {"$session_id": "two"},
                        "timestamp": "2012-01-15 00:16:50",
                    },  # 
                ],
                "2": [
                    {"event": "$pageview", "properties": {"$session_id": "three"}, "timestamp": "2012-01-14 00:16:00"},
                    {