Function finalize_joined_room 

async fn finalize_joined_room(
    services: &Services,
    sender_user: &UserId,
    filter: &FilterDefinition,
    state_events: Vec<PduEvent>,
    aggregates: JoinAggregates,
    receipt_events: Vec<(OwnedUserId, Raw<AnySyncEphemeralRoomEvent>)>,
    heroes: Option<Vec<OwnedUserId>>,
    joined_member_count: Option<u64>,
    invited_member_count: Option<u64>,
    thread_last_reads: Option<&BTreeMap<OwnedEventId, u64>>,
    send_notification_count_filter: impl Fn(&UInt) -> bool,
    flags: FinalizeJoinFlags,
    in_window: impl Fn(u64) -> bool,
    prev_batch: Option<PduCount>,
) -> (JoinedRoom, HashSet<OwnedUserId>, HashSet<OwnedUserId>)