Fix: Not able to add MCP Server [#12394](https://github.com/infiniflow/ragflow/issues/12394) (#12406)

### What problem does this PR solve?

Fix: Not able to add MCP Server
[#12394](https://github.com/infiniflow/ragflow/issues/12394)

### Type of change

- [x] Bug Fix (non-breaking change which fixes an issue)

web/src/pages/user-setting/mcp/edit-mcp-dialog.tsx

@@ -171,7 +171,7 @@ export function EditMcpDialog({
     <Modal
       title={id ? t('mcp.editMCP') : t('mcp.addMCP')}
       open={true}
-      onOpenChange={hideModal}
+      onCancel={hideModal}
       cancelText={t('common.cancel')}
       okText={t('common.save')}
       footer={