fix: resolve lifecycle memory leaks by cleaning up listeners and root closures (#25049)

packages/cli/src/gemini.test.tsx

@@ -1428,12 +1428,13 @@ describe('startInteractiveUI', () => {
   vi.mock('./ui/utils/updateCheck.js', () => ({
     checkForUpdates: vi.fn(() => Promise.resolve(null)),
   }));
-
   vi.mock('./utils/cleanup.js', () => ({
     cleanupCheckpoints: vi.fn(() => Promise.resolve()),
     registerCleanup: vi.fn(),
+    removeCleanup: vi.fn(),
     runExitCleanup: vi.fn(),
     registerSyncCleanup: vi.fn(),
+    removeSyncCleanup: vi.fn(),
     registerTelemetryConfig: vi.fn(),
     setupSignalHandlers: vi.fn(),
     setupTtyCheck: vi.fn(() => vi.fn()),