fix(web): compact slo diagnostics timestamp

apps/web/src/app/[locale]/governance/tabs/slo-tab.tsx

@@ -363,12 +363,8 @@ function formatShortDate(value?: string | null): string {
   if (!value) return '--'
   const date = new Date(value)
   if (Number.isNaN(date.getTime())) return '--'
-  return date.toLocaleString(undefined, {
-    month: '2-digit',
-    day: '2-digit',
-    hour: '2-digit',
-    minute: '2-digit',
-  })
+  const pad = (input: number) => String(input).padStart(2, '0')
+  return `${pad(date.getMonth() + 1)}/${pad(date.getDate())} ${pad(date.getHours())}:${pad(date.getMinutes())}`
 }
 
 function historyRouteLabel(summary: RemediationHistoryWorkItemSummary): string {