## 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
self.assertEqual(daily_response[0]["label"], "sign up - some_val")
            self.assertEqual(daily_response[1]["data"][0], 1)
            self.assertEqual(daily_response[1]["label"], "sign up - none")
            # 
            with freeze_time("2019-12-31T13:00:01Z"):
                monthly_response = Trends().run(
                    Filter(data={"interval": "day", "events": [{"id": "sign up", "math": "monthly_active"}]}),
                    self.team,
                )
            self.assertEqual(monthly_response[0]["data"][0], 3)  # 
            with freeze_time("2019-12-31T13:00:01Z"):
                weekly_response = Trends().run(
                    Filter(data={"interval": "day", "events": [{"id": "sign up", "math": "weekly_active"}]}),
                    self.team,
                )
            self.assertEqual(weekly_response[0]["data"][0], 3)  # 
            # 
            with freeze_time("2019-12-31T13:00:01Z"):
                daily_response = Trends().run(
                    Filter(
                        data={
                            "interval": "day",
                            "events": [{"id": "sign up", "math": "dau"}],
                            "breakdown": "$some_prop",
                        }
                    ),
                    self.team,
                )
    @test_with_materialized_columns(["$some_property"])
    def test_breakdown_filtering_limit(self):