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]/CreateDataset.tsx

@@ -53,8 +53,8 @@ interface CreateDatasetLocationState {
   knowledgeBaseId?: string;
   parentId?: string;
   startStep?: StepKey;
-  fileId?: string;
-  fileIds?: string[];
+  fileId?: string | string[];
+  fileIds?: string | string[];
 }
 
 const CreateDataset = () => {
@@ -67,7 +67,11 @@ const CreateDataset = () => {
   const knowledgeBaseId = locationState.knowledgeBaseId || routeKnowledgeBaseId;
   const parentId = locationState.parentId;
   const initialStepKey = locationState.startStep ?? 'selectFile';
-  const initialFileIds = locationState.fileIds ?? (locationState.fileId ? [locationState.fileId] : []);
+  const initialFileIds = (() => {
+    const fileIds = locationState.fileIds || locationState.fileId;
+    if (!fileIds) return [];
+    return Array.isArray(fileIds) ? fileIds : [fileIds];
+  })();
   const [current, setCurrent] = useState<number>(stepIndexMap[initialStepKey]);
   const tableRef = useRef<TableRef>(null);