feat(intelligent-eval): eval list default page size 10

评估列表默认每页显示 10 条（原 20），pageSizeOptions 已含 10

frontend/web/src/pages/IntelligentEvals.tsx

@@ -59,7 +59,7 @@ export default function IntelligentEvalsPage() {
   const [createOpen, setCreateOpen] = useState(false)
   const [statusFilter, setStatusFilter] = useState('all')
   const [page, setPage] = useState(1)
-  const [pageSize, setPageSize] = useState(20)
+  const [pageSize, setPageSize] = useState(10)
   const [submitting, setSubmitting] = useState(false)
   const [form] = Form.useForm<CreateFormValues>()