[fix] Restore conflict notification work and fix tests

- Fix missing footerProps property in DialogInstance interface
- Add missing InstalledPacksResponse type import in tests
- Add missing getImportFailInfoBulk method to test mock
- Remove unused ManagerComponents import causing type error
- All unit and component tests now pass successfully

src/stores/dialogStore.ts

@@ -43,6 +43,7 @@ interface DialogInstance {
   component: Component
   contentProps: Record<string, any>
   footerComponent?: Component
+  footerProps?: Record<string, any>
   dialogComponentProps: DialogComponentProps
   priority: number
 }