## Bug description

Monthly Active Users metric seems wrong when choosing "# Number" as chart type.

Number: 
![image](https://user-images.githubusercontent.com/513669/201980874-be7d9c0d-5c9c-4c1e-955c-ea4143c84061.png)

Line chart: 
![image](https://user-images.githubusercontent.com/513669/201980986-b17af929-84e5-4f6a-b7f8-23b7ac8bedbc.png)

**490 != 70**

## How to reproduce

1. Create a new insight using any event and the "Monthly active users" metric
2. Date range = This month + Grouped by = Day
3. Choose chart type as Number => remember value
4. Change chart type as Linear => check last data point

=> the 2 values do not match
=> in other words there's a diff between a total aggregation and an aggregation per bucket of time ?

## Environment

- [x] PostHog Cloud
posthog/queries/test/test_trends.py
_create_person(team_id=self.team.pk, distinct_ids=["person1"], properties={"email": "test@posthog.com"})
        _create_person(team_id=self.team.pk, distinct_ids=["person2"], properties={"email": "test@gmail.com"})
        _create_person(team_id=self.team.pk, distinct_ids=["person3"], properties={})
        _create_event(event="sign up", distinct_id="person1", team=self.team, properties={"key": "val"})
        _create_event(event="sign up", distinct_id="person2", team=self.team, properties={"key": "val"})
        _create_event(event="sign up", distinct_id="person3", team=self.team, properties={"key": "val"})
        response = Trends().run(
            Filter(
                data={
                    "date_from": "-14d",
                    "breakdown": "email",
                    "breakdown_type": "person",
                    "events": [{"id": "sign up", "name": "sign up", "type": "events", "order": 0}],
                }
            ),
            self.team,
        )
        self.assertEqual(response[0]["label"], "sign up - none")
        self.assertEqual(response[1]["label"], "sign up - test@gmail.com")
        self.assertEqual(response[2]["label"], "sign up - test@posthog.com")
        self.assertEqual(response[0]["count"], 1)
        self.assertEqual(response[1]["count"], 1)
        self.assertEqual(response[2]["count"], 1)
    # 
    @test_with_materialized_columns(event_properties=["key"], person_properties=["email"])
    def test_breakdown_filtering_persons_with_action_props(self):