feat: update ApplicationStatsChart to use new session count fields

Author: moonrailgun

src/client/components/application/ApplicationStatsChart.tsx

@@ -151,8 +151,11 @@ export const ApplicationStatsChart: React.FC<ApplicationStatsChartProps> =
 
           <StatCard
             label={t('Sessions')}
-            curr={statsData.sessions.total}
-            diff={statsData.sessions.diff}
+            curr={data?.currentTotalSessionCount || 0}
+            diff={
+              (data?.currentTotalSessionCount || 0) -
+              (data?.previousTotalSessionCount || 0)
+            }
           />
 
           <StatCard

src/server/trpc/routers/application.ts

@@ -322,6 +322,8 @@ export const applicationRouter = router({
       z.object({
         current: eventStatsQueryResultItemSchema.array(),
         previous: eventStatsQueryResultItemSchema.array(),
+        currentTotalSessionCount: z.number(),
+        previousTotalSessionCount: z.number(),
       })
     )
     .query(async ({ ctx, input }) => {