feat(knowledgeBase): add media dataset support and improve file handling

- Add media dataset translations in English and Chinese locales
- Add "mediaDataSet" and "uploadMedia" i18n keys for UI labels
- Enable media dataset creation option in Private component by uncommenting menu item
- Import and display image icon for media dataset menu option
- Refactor file ID handling in CreateDataset to support both string and array types
- Improve fileIds initialization logic to handle mixed input types
- Update CreateImageDataset component to use file chunking workflow
- Add navigation to parameter settings step after file upload
- Pass file IDs to dataset creation flow for media processing
- Add message API and navigate hook for improved UX feedback

web/src/views/KnowledgeBase/[knowledgeBaseId]/Private.tsx

@@ -13,6 +13,7 @@ import folderIcon from '@/assets/images/knowledgeBase/folder.png';
 import textIcon from '@/assets/images/knowledgeBase/text.png';
 import editIcon from '@/assets/images/knowledgeBase/edit.png';
 import blankIcon from '@/assets/images/knowledgeBase/blankDocument.png';
+import imageIcon from '@/assets/images/knowledgeBase/image.png'
 import { getKnowledgeBaseDetail, deleteDocument, downloadFile, updateKnowledgeBase } from '@/api/knowledgeBase';
 import { 
   type CreateModalRef, 
@@ -327,15 +328,15 @@ const Private: FC = () => {
         // handleCreate('folder'); // 传入 type: 'folder'
       },
     },
-    // 暂时未实现
-    // {
-    //   key: '3',
-    //   icon: <img src={imageIcon} alt="image" style={{ width: 16, height: 16 }} />,
-    //   label: t('knowledgeBase.imageDataSet'),
-    //   onClick: () => {
-    //     createImageDataset?.current?.handleOpen(knowledgeBaseId || '', parentId || '')
-    //   },
-    // },
+    {
+      key: '3',
+      icon: <img src={imageIcon} alt="image" style={{ width: 16, height: 16 }} />,
+      label: t('knowledgeBase.mediaDataSet'),
+      onClick: () => {
+        createImageDataset?.current?.handleOpen(knowledgeBaseId || '', parentId || '')
+      },
+    },
+        // 暂时未实现
     // {
     //   key: '4',
     //   icon: <img src={blankIcon} alt="blank" style={{ width: 16, height: 16 }} />,