feat(PublicJobFair): Improve table layout and scrolling behavior

- Increase operation column width from 150 to 200 pixels for better button spacing
- Fix operation column to the right side of the table with fixed positioning
- Add horizontal scroll support to table with max-content width configuration
- Enhance user experience when viewing job fair listings with many columns

src/pages/Jobfair/PublicJobFair/index.tsx

@@ -88,7 +88,8 @@ const PublicJobFairList: React.FC = () => {
     {
       title: '操作',
       valueType: 'option',
-      width: 150,
+      width: 200,
+      fixed: 'right',
       render: (_, record) => [
         <Button
           key="detail"
@@ -137,6 +138,7 @@ const PublicJobFairList: React.FC = () => {
         actionRef={actionRef}
         rowKey="jobFairId"
         columns={columns}
+        scroll={{ x: 'max-content' }}
         rowSelection={{
           selectedRowKeys,
           onChange: setSelectedRowKeys,