Fix heartbeats in future from messing with active_user data

app/jobs/cache/active_users_graph_data_job.rb

@@ -8,6 +8,7 @@ class Cache::ActiveUsersGraphDataJob < Cache::ActivityJob
     hours = Heartbeat.coding_only
                      .with_valid_timestamps
                      .where("time > ?", 24.hours.ago.to_f)
+                     .where("time < ?", Time.current.to_f)
                      .select("(EXTRACT(EPOCH FROM to_timestamp(time))::bigint / 3600 * 3600) as hour, COUNT(DISTINCT user_id) as count")
                      .group("hour")
                      .order("hour DESC")