## 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/trends_event_query.py
if self._using_person_on_events
            else PersonPropertiesMode.USING_PERSON_PROPERTIES_COLUMN,
            person_id_joined_alias=f"{self.DISTINCT_ID_TABLE_ALIAS if not self._using_person_on_events else self.EVENT_TABLE_ALIAS}.person_id",
        )
        self.params.update(prop_params)
        entity_query, entity_params = self._get_entity_query()
        self.params.update(entity_params)
        person_query, person_params = self._get_person_query()
        self.params.update(person_params)
        groups_query, groups_params = self._get_groups_query()
        self.params.update(groups_params)
        session_query, session_params = self._get_sessions_query()
        self.params.update(session_params)
        null_person_filter = (
            f"AND {self.EVENT_TABLE_ALIAS}.person_id != toUUIDOrZero('')" if self._using_person_on_events else ""
        )
        query = f"""
            SELECT {_fields} FROM events {self.EVENT_TABLE_ALIAS}
            {self._get_distinct_id_query()}
            {person_query}
            {groups_query}
            {session_query}
            WHERE team_id = %(team_id)s
            {entity_query}
            {date_query}
            {prop_query}
            {null_person_filter}
        """
        return query, self.params
    def _determine_should_join_persons(self) -> None: