feat(knowledgeBase): add knowledge graph rebuild and delete functionality

- Add deleteKnowledgeGraph and rebuildKnowledgeGraph API endpoints to knowledgeBase.ts
- Add internationalization strings for rebuild confirmation dialog and success/failure messages in both English and Chinese
- Implement rebuild mode logic in CreateModal component with confirmation dialog before rebuilding
- Add originalType state tracking to distinguish between rebuild and regular edit modes
- Update handleSave to trigger graph deletion and rebuild when in rebuild mode with graphrag enabled
- Add handleDeleteGraph method to delete existing knowledge graph data before rebuild
- Update performSave to use correct type value during save operation in rebuild mode
- Enhance Private.tsx to refresh knowledge base details after table data refresh
- Import new API functions (deleteKnowledgeGraph, rebuildKnowledgeGraph) in CreateModal
- Update KnowledgeGraphCard component timestamp in file header

web/src/api/knowledgeBase.ts

@@ -295,4 +295,14 @@ export const getKnowledgeGraph = async (kb_id: string) => {
 export const getKnowledgeGraphEntityTypes = async (query: any) => {
   const response = await request.get(`${apiPrefix}/knowledges/knowledge_graph_entity_types`,query);
   return response ;
+};
+// 删除图谱
+export const deleteKnowledgeGraph = async (kb_id: string) => {
+  const response = await request.delete(`${apiPrefix}/knowledges/${kb_id}/knowledge_graph`);
+  return response;
+};
+// 知识库图谱重建
+export const rebuildKnowledgeGraph = async (kb_id: string) => {
+  const response = await request.post(`${apiPrefix}/knowledges/${kb_id}/knowledge_graph`);
+  return response;
 };