only use hourly table, remove daily table logic, fix updatechart undefined

src/queries/analytics/sessions/getSessionStats.ts

@@ -46,7 +46,6 @@ async function clickhouseQuery(
     ...filters,
     eventType: EVENT_TYPE.pageView,
   });
-  const table = unit === 'hour' ? 'website_event_stats_hourly' : 'website_event_stats_daily';
 
   return rawQuery(
     `
@@ -57,7 +56,7 @@ async function clickhouseQuery(
       select 
         ${getDateSQL('created_at', unit, timezone)} as t,
         uniq(session_id) as y
-      from ${table} website_event
+      from website_event_stats_hourly website_event
       where website_id = {websiteId:UUID}
         and created_at between {startDate:DateTime64} and {endDate:DateTime64}
         and event_type = {eventType:UInt32}