## 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/trends/breakdown.py
cohort_queries, cohort_ids, cohort_params = format_breakdown_cohort_join_query(
            self.team, self.filter, entity=self.entity
        )
        params = {"values": cohort_ids, **cohort_params}
        breakdown_filter = BREAKDOWN_COHORT_JOIN_SQL
        breakdown_filter_params = {"cohort_queries": cohort_queries}
        return params, breakdown_filter, breakdown_filter_params, "value"
    def _breakdown_prop_params(self, aggregate_operation: str, math_params: Dict):