fix(desktop): remove duplicate getCronJobRuns() call in CronJobSidebarRuns

The separate useEffect for visible-triggered immediate load was firing
simultaneously with the initial load in the main effect when visible=true
on mount, causing duplicate requests. The main effect already handles
initial load when visible, so the separate effect is redundant.

Part of PR #75395.

apps/desktop/src/app/chat/sidebar/cron-jobs-section.tsx

@@ -371,19 +371,6 @@ function CronJobSidebarRuns({ jobId, onOpenRun }: { jobId: string; onOpenRun: (s
     // cronChangeTick: a fired run reloads the peek immediately.
   }, [changeEventsAvailable, cronChangeTick, jobId, visible])
 
-  // Separate effect to trigger immediate load when pane becomes visible
-  useEffect(() => {
-    if (visible) {
-      getCronJobRuns(jobId, PEEK_RUN_LIMIT)
-        .then(result => {
-          setRuns(result)
-        })
-        .catch(() => {
-          setRuns(prev => prev ?? [])
-        })
-    }
-  }, [visible, jobId])
-
   return (
     <div className="mb-1 ml-[1.375rem] flex flex-col gap-px">
       {runs === null ? (