[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

tests-ui/tests/components/dialog/content/manager/packCard/PackCard.test.ts

@@ -25,6 +25,7 @@ vi.mock('@/stores/comfyManagerStore', () => ({
   useComfyManagerStore: vi.fn(() => ({
     isPackInstalled: vi.fn(() => false),
     isPackEnabled: vi.fn(() => true),
+    isPackInstalling: vi.fn(() => false),
     installedPacksIds: []
   }))
 }))